Practice Test Answers

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4

At a pumpkin patch, if Armando guesses the weight of his pumpkin within 0 point 3 pounds, he gets to take the pumpkin home for free. If his pumpkin weighs 4 point 9 pounds, which two equations can be used to find the minimum and maximum weights he can guess in order to get his pumpkin for free?

A
x plus 4 point 9 is equal to 0 point 3 and x plus 4 point 9 is equal to negative 0 point 3
B
x plus 0 point 3 is equal to 4 point 9 and x plus 0 point 3 is equal to negative 4 point 9
C
x minus 4 point 9 is equal to 0 point 3 and x minus 4 point 9 is equal to negative 0 point 3
D
x minus 0 point 3 is equal to 4 point 9 and x minus 0 point 3 is equal to negative 4 point 9
5

If f of x is equal to x squared minus 25 and g of x is equal to x minus 5 , what is the domain of open paren f over g close paren of x ?

A
all real values of x except x is equal to 5
B
all real values of x except x is equal to negative 5
C
all real values of x
D
all real values of x except x is equal to 5 and x is equal to negative 5
6

Which function is the inverse of f of x is equal to negative 5 x minus 4 ?

A
f inverse of x is equal to negative 1 fifth x minus 4 fifths
B
f inverse of x is equal to negative 1 fifth x plus 4 fifths
C
f inverse of x is equal to negative 4 x plus 5
D
f inverse of x is equal to 4 x plus 4
7

If the function f of x is equal to m x plus b has an inverse function, which statement must be true?

A
b is equal to 0
B
m is equal to 0
C
m is not equal to 0
D
b is not equal to 0
9

Which statement is true about f of x plus 2 is equal to 1 sixth start absolute value x minus 3 end absolute value ?

A
The graph of f of x has range of f of x is greater than or equal to negative 2 .
B
The graph of f of x is a horizontal compression of the graph of the parent function.
C
The graph of f of x opens downward.
D
The graph of f of x has a vertex of open paren negative 3 comma 2 close paren .
10

Which of the following is the graph of f of x is equal to 3 start absolute value x minus 4 end absolute value plus 1 ?

A
Image with description On a Cartesian coordinate system, the x-axis labeled from negative 9 to 1 in increments of 1 and y-axis labeled from negative 7 to 3 in increments of 1. A v shaped curve is plotted. The curve's vertex is at (negative 4 comma 1). From this point, the curve opens downwards, with its left branch passing through (negative 5 comma negative 2) and (negative 6 comma negative 5), and its right branch passing through (negative 3 comma negative 2) and (negative 2 comma negative 5).
B
Image with description On a coordinate plane, the scale on the x axis ranges from negative 1 to 9 in increments of 1, and the scale on the y axis ranges from negative 3 to 7 in increments of 1. The V-shaped graph opening upward has a vertex at (4 comma 1) and the graph passes through the points (3 comma 4) and (5 comma 4).
C
Image with description On a Cartesian coordinate system, the x-axis labeled from negative 3 to 7 in increments of 1 and y-axis labeled from negative 7 to 3 in increments of 1. A v shaped curve is plotted. The curve's vertex is at (4 comma negative 1). From this point, the curve opens downwards, with its left branch passing through (3 comma negative 4) and (2 comma negative 7), and its right branch passing through (5 comma negative 4) and (6 comma negative 7).
D
Image with description On a Cartesian coordinate system, the x-axis labeled from negative 8 to 2 in increments of 1 and y-axis labeled from negative 3 to 7 in increments of 1. A v shaped curve is plotted. The curve's vertex is at (negative 4 comma negative 1). From this point, the curve opens upwards, with its left branch passing through (negative 5 comma 2) and (negative 6 comma 5), and its right branch passing through (negative 3 comma 2) and (negative 2 comma 5).

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