N/A — Exam Answers

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Which of the following describes the zeroes of the graph of f of x is equal to negative x to the 5th power plus 9 x to the 4th power minus 18 x cubed ?

A
0 with multiplicity 3 , 3 with multiplicity 1 , and 6 with multiplicity 1
B
0 with multiplicity 3 , 3 with multiplicity 2 , and 2 with multiplicity 1
C
0 with multiplicity 3 , negative 3 with multiplicity 1 , and negative 6 with multiplicity 1
D
0 with multiplicity 3 , negative 3 with multiplicity 2 , and negative 2 with multiplicity 1
43

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

A
negative 3 point 1 is less than x comma x is less than negative 2 point 7
B
negative 0 point 3 is less than x comma x is less than 0 point 1
C
negative 1 point 5 is less than x comma x is less than negative 1 point 1
D
negative 2 point 3 is less than x comma x is less than negative 1 point 9
44

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

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
49

Which is the diagonal matrix containing these elements?

A
the 5 by 5 matrix, row 1, column 1, 16 column 2, 0 column 3, 0 column 4, 0 column 5, 0 row 2, column 1, 0 column 2, negative 8 point 7 column 3, 0 column 4, 0 column 5, 0 row 3, column 1, 0 column 2, 0 column 3, 5 point 4 column 4, 0 column 5, 0 row 4, column 1, 0 column 2, 0 column 3, 0 column 4, 1 point 3 column 5, 0 row 5, column 1, 0 column 2, 0 column 3, 0 column 4, 0 column 5, negative 6 point 9
B
the 5 by 5 matrix, row 1, column 1, 16 column 2, negative 3 point 7 column 3, 6 column 4, 1 point 7 column 5, negative 8 point 8 row 2, column 1, 0 column 2, negative 8 point 7 column 3, negative 4 point 1 4 column 4, 1 column 5, 7 row 3, column 1, 0 column 2, 0 column 3, 5 point 4 column 4, negative 9 column 5, negative 3 row 4, column 1, 0 column 2, 0 column 3, 0 column 4, 1 point 3 column 5, 5 row 5, column 1, 0 column 2, 0 column 3, 0 column 4, 0 column 5, negative 6 point 9
C
the 5 by 5 matrix, row 1, column 1, 16 column 2, 0 column 3, 0 column 4, 6 column 5, 0 row 2, column 1, 0 column 2, negative 8 point 7 column 3, 0 column 4, 0 column 5, 5 row 3, column 1, 0 column 2, 0 column 3, 5 point 4 column 4, 0 column 5, 0 row 4, column 1, 2 column 2, 0 column 3, 0 column 4, 1 point 3 column 5, 0 row 5, column 1, 0 column 2, 1 column 3, 0 column 4, 0 column 5, negative 6 point 9
D
the 5 by 5 matrix, row 1, column 1, 16 column 2, 0 column 3, 0 column 4, 0 column 5, 0 row 2, column 1, negative 6 column 2, negative 8 point 7 column 3, 0 column 4, 0 column 5, 0 row 3, column 1, 5 column 2, 43 column 3, 5 point 4 column 4, 0 column 5, 0 row 4, column 1, 3 column 2, 2 column 3, 1 point 2 column 4, 1 point 3 column 5, 0 row 5, column 1, negative 9 point 9 column 2, 7 column 3, negative 6 point 8 column 4, negative point 0 5 column 5, negative 6 point 9
50

For which interval is the average rate of change of f of x negative?

A
from x is equal to 3 to x is equal to 4 point 5
B
from x is equal to negative 3 to x is equal to 3
C
from x is equal to 0 to x is equal to 2 point 5
D
from x is equal to negative 3 point 5 to x is equal to negative 1

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