N/A — Exam Answers

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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 negative 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 and x is equal to 1
D
x is equal to 1
26

What is the solution of square root of negative 4 x end root is equal to 100 ?

A
x is equal to negative 2500
B
x is equal to negative 50
C
x is equal to negative 2 point 5
D
no solution
28

Given that tangent squared theta is equal to 3 eighths , what is the value of secant theta ?

A
plus or minus square root of 8 thirds
B
11 eighths
C
8 thirds
D
plus or minus square root of 11 eighths
29

Which set of transformations is needed to graph f of x is equal to negative 0 point 1 cosine x minus 4 from the parent cosine function?

A
reflection across the x -axis, vertical compression by a factor of 0 point 1 , vertical translation 4 units down
B
vertical stretching by a factor of 0 point 1 , vertical translation 4 units up, reflection across the x -axis
C
reflection across the y -axis, vertical compression by a factor of 0 point 1 , vertical translation 4 units up
D
vertical stretching by a factor of 0 point 1 , vertical translation 4 units down, reflection across the y -axis
30

What are the domain and range of f of x is equal to 2 times open paren 3 to the x th power close paren ?

A
domain: open paren negative infinity comma infinity close paren ; range: open paren 2 comma infinity close paren
B
domain: open paren negative infinity comma infinity close paren ; range: open paren 0 comma infinity close paren
C
domain: open paren 2 comma infinity close paren ; range: open paren negative infinity comma infinity close paren
D
domain: open paren 0 comma infinity close paren ; range: open paren negative infinity comma infinity close paren
32

Given the function f of x is equal to 3 start absolute value x minus 2 end absolute value plus 6 , for what values of x is f of x is equal to 18 ?

A
x is equal to negative 2 , x is equal to negative 8
B
x is equal to negative 2 , x is equal to 8
C
x is equal to negative 2 , x is equal to negative 6
D
x is equal to negative 2 , x is equal to 6
33

What is the product? Assume x is greater than or equal to 0 open paren square root of 3 x plus square root of 5 close paren times open paren square root of 15 x plus 2 square root of 30 close paren

A
3 x square root of 5 plus 10 square root of 6
B
3 x square root of 5 plus 6 square root of 10 x plus 5 square root of 3 x plus 10 square root of 6
C
3 x square root of 5 plus 3 square root of 165 x plus 10 square root of 6
D
6 square root of 3 x plus 10 square root of 6
37

Which expression is equivalent to cosine 120 degrees ?

A
cosine 420 degrees
B
cosine 60 degrees
C
cosine 240 degrees
D
cosine 300 degrees
39

What are the potential solutions of the natural log of open paren x squared minus 25 close paren is equal to 0 ?

A
x is equal to plus or minus 10
B
x is equal to plus or minus square root of 26
C
x is equal to plus or minus square root of 13
D
x is equal to plus or minus 5
40

What are the domain and range of f of x is equal to start absolute value x plus 6 end absolute value ?

A
domain: open paren negative infinity comma infinity close paren ; range: f of x is greater than or equal to 0
B
domain: x is greater than or equal to negative 6 ; range: open paren negative infinity comma infinity close paren
C
domain: x is less than or equal to negative 6 ; range: open paren negative infinity comma infinity close paren
D
domain: open paren negative infinity comma infinity close paren ; range: f of x is less than or equal to 0

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