Multiply.(9x + 5)2
A. 81x2 + 90x + 25
B. 9x2 + 90x + 25
C. 81x2 + 25
D. 9x2 + 25
Answer: A
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Find the product.-8 ? (-8m)
A. 64m B. -16m C. -16 + m D. -64m
Use the definition of a logarithm to prove 
.Hint: Let
and 
. Then,
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.
? ?
A. Let 
and 
so that 
and 
. Then 
and by definition, 
; that is 
.
B. Let 
and 
so that 
and 
. Then 
and by definition, 
; that is 
.
C. Let 
and 
so that 
and 
. Then 
and by definition, 
; that is 
.
Find the value for the function.Find f(-9) when f(x) = |x|- 6.
A. 15 B. -15 C. 3 D. -3
The displacement d (in meters) of an object at time t (in seconds) is given. Describe the motion of the object. What is the maximum displacement from its resting position, the time required for one oscillation, and the frequency?d = 5 sin (3t)
A. simple harmonic; 5 m; 3 ? sec; 
oscillations/sec
B. simple harmonic; -5 m; 
? sec; 
oscillations/sec
C. simple harmonic; 5 m; 
? sec; 
oscillations/sec
D. simple harmonic; 5 m; 
sec; 
? oscillations/sec