N/A — Exam Answers

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Which expression is equivalent to open paren x raised to the 1 fourth power y to the 16th power close paren raised to the 1 half power ?

A
x raised to the 1 half power y to the 4th power
B
x raised to the 1 fourth power y to the 8th power
C
x raised to the 1 fourth power y to the 4th power
D
x raised to the 1 eighth power y to the 8th power
42
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What is the approximate value of a local maximum for the polynomial?

A
2 point 5
B
0 point 5
C
negative 2 point 5
D
negative 4 point 5
43

Which statement is true?

A
The mean and median age are most likely the same for both sets of data.
B
The median age of the students in Math 1 is greater than the median age of the students in Math 2.
C
The median age of the students is Math 1 is less than the median age of the students in Math 2.
D
The mean and median age are more likely to be the same for the students in Math 1.
44

Why might the graph be considered misleading?

A
The scales on the x - and y -axes are unequal.
B
The interval on the y -axis is too large for the data set.
C
The interval on the x -axis is too large for the data set.
D
The scale on the y -axis misrepresents the difference in the heights of the bars.
45

The scatterplot shows the ages and finishing times of seven men who ran a charity 5 cap k run. Use the labeled points to create a linear model that predicts the race time in minutes, y , of a man of any age, x Which equation represents this linear model?

A
y is equal to 0 point 4 7 x plus 7 point 7 2
B
y is equal to 2 point 1 4 6 x minus 27 point 5 7
C
y is equal to 0 point 4 7 x plus 29 point 1 5
D
y is equal to 2 point 1 4 6 x minus 2 point 0 7
47

For the graphs, for which probability distribution is the value of the median greater than the value of the mean?

A
Negatively skewed
B
Normal, symmetrical distribution
C
Positively skewed distribution
D
None of the above
49

What is the domain of the function?

A
x is less than 0
B
all real numbers
C
x is less than 1
D
x is greater than 0
50

The values in the table represent the graph of a continuous function. Which interval must contain an x -intercept?

A
negative 1 point 5 is less than x comma x is less than negative 1 point 1
B
negative 3 point 1 is less than x comma x is less than negative 2 point 7
C
negative 2 point 3 is less than x comma x is less than negative 1 point 9
D
negative 0 point 3 is less than x comma x is less than 0 point 1
52

Rina spins the given spinner 30 times. A success occurs when the spinner lands on a number that is greater than 6 What is the probability of a success and a failure for this experiment?

A
cap p times success is equal to 1 fourth ; cap p times failure is equal to 7 eighths
B
cap p times success is equal to 7 eighths ; cap p times failure is equal to 1 eighth
C
cap p times success is equal to 1 fourth ; cap p times failure is equal to 3 fourths
D
cap p times success is equal to 3 fourths ; cap p times failure is equal to 1 fourth
53

Why is the plot misleading?

A
The plot shows that the data is skewed.
B
The stem does not clearly show the outlier.
C
There is not an equal number of data points for each stem.
D
The plot shows duplicate data points.
54

Which equation represents this linear model?

A
y is equal to 4 point 6 9 5 x minus 9322 point 4
B
y is equal to 4 point 6 9 5 x minus 9181 point 6
C
y is equal to 0 point 2 1 3 x minus 352 point 7
D
y is equal to 0 point 2 1 3 x minus 358 point 4
55

A polynomial function has a root of negative 4 with multiplicity 4 , a root of negative 1 with multiplicity 3 , and a root of 5 with multiplicity 6 If the function has a positive leading coefficient and is of odd degree, which could be the graph of the function?

A
Image with description On a coordinate plane with x and y axes marked from negative 8 to 8, a polynomial graph is drawn. It starts from quadrant 2, passes through (negative 6 comma 8), crosses x axis at (Negative 4 comma 0), moves up and curves down at (negative 2 comma 1), crosses x axis at )negative 1 comma 0) and then y axis at (0 comma negative 1 point 9). It then moves down to quadrant 4 and curves up at (2 comma negative 4), touches x axis at (5 comma 0) and moves to quadrant 4 through (6 point 5 comma negative 8)
B
Image with description On a coordinate plane with x and y axes marked from negative 8 to 8, a polynomial graph is drawn. It starts from quadrant 3, passes through (negative 5 point 5 comma negative 8), touches x axis at (negative 4 comma 0), goes down and curves up at (negative 2 point 5 comma negative 1) and passes through x axis (negative 1 comma 0) and y axis at (0 comma 3). It moves further up and curves down at (2 comma 7), touches x axis at (5 comma 0) and moves to quadrant 1 through (6 comma 8).
C
Image with description On a coordinate plane with x and y axes marked from negative 8 to 8, a polynomial graph is drawn. It starts from quadrant 2, passes through (negative 6 comma 4), touches the x axis at (negative 4 comma 0), moves up and curves down to pass through the x axis at (negative 1 comma 0), y axis at ((0 coma negative 2). It then moves down and curves up at (3 comma negative 8), crosses the x axis at (5 comma 0) and moves to quadrant 1 passing through (5 point 5 comma 8).
D
Image with description On a coordinate plane with x and y axes marked from negative 8 to 8, a polynomial graph is drawn. It starts from quadrant 2, passes through (negative 5 point 6 comma 8), crosses x axis at (negative 4 comma 0), moves down and curves up and crosses x axis at (negative 1 comma 0). From here it passes through y axis at (0 comma 0 point 5), move down, curves up at (3 point 5 comma negative 4 point 5), crosses x axis at (5 comma 0) and move to quadrant 1 through (6 comma 8).
57

Consider the equation. log sub 4 of open paren x plus 3 close paren is equal to log sub 2 of open paren 2 plus x close paren Which system of equations can represent the equation?

A
y sub 1 is equal to the fraction with numerator log x plus 3 and denominator 4 , y sub 2 is equal to the fraction with numerator log 2 plus x and denominator 2
B
y sub 1 is equal to the fraction with numerator the log of open paren x plus 3 close paren and denominator log 4 , y sub 2 is equal to the fraction with numerator the log of open paren 2 plus x close paren and denominator log 2
C
y sub 1 is equal to the fraction with numerator log 4 and denominator log 2 , y sub 2 is equal to the log of open paren x plus 3 close paren over the log of open paren 2 plus x close paren
D
y sub 1 is equal to the fraction with numerator log x plus 3 and denominator log 4 , y sub 2 is equal to the fraction with numerator log 2 plus x and denominator log 2
59

Which of the following shows the true solution to the logarithmic equation 3 log sub 2 2 x is equal to 3 ?

A
x is equal to 1
B
x is equal to 0 , x is equal to negative 1 , and x is equal to 1
C
x is equal to negative 1
D
x is equal to negative 1 and x is equal to 1

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