When tuning a piano, a technician strikes a tuning fork for the A above middle C and sets up a wave motion that can be approximated by
?
y= 0.001 sin 880?t,
?
wheret is the time (in seconds).
?
What is the period of the function?
?
A. 
sec
B. 440 sec
C. 
sec
D. 880 sec
E. 88 sec
Answer: C
Mathematics
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Evaluate the polynomial function for the given value.P(x) = -6x3 + 4x2 + 2x + 1; P(-2)
A. -27 B. 51 C. 61 D. 37
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Provide an appropriate response.Which of the following is not a factor of 348?
A. 4 B. 2 C. 34 D. 8
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Multiply (3 - j4) ð (3 - j2).
What will be an ideal response?
Mathematics
Determine whether the function f(x) = (x + 4) 2 , x ? –4 has an inverse function. If it does, find the inverse function.
a. 
b. f –1 (x) = –(x + 4) 2
c. f –1 (x) = (x + 4) –2
d. 
Mathematics