Step Functions — Cumulative exam Answers
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What is the solution of ?
A
x = –17B
x = 13C
x = 53D
no solution22
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What is the solution to the equation ?
m
m = –4m
m = –2m
m = 2m
m = 423
A supervisor finds the mean number of miles that the employees in a department live from work. He finds and . Which statement must be true?
A
z37 is within 1 standard deviation of the mean.B
z37 is between 1 and 2 standard deviations of the mean.C
z37 is between 2 and 3 standard deviations of the mean.D
z37 is more than 3 standard deviations of the mean.24
Which of the following gives a single solution of the inequality and shows a graph that can be used to determine the entire solution set of the inequality?
A
x = 0
B
x = –1
C
x = 2
D
x = 5
25
Which of the following is true for f(x) = –2sin(x) – 3?
A
The range of the function is the set of real numbers .
B
The graph of the function is the graph of f(x) = –2sin(x) shifted 3 units up.C
The amplitude of the function is 2.D
The period of the function is .
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