Determine the phase shift of the function.y = -4 cos 
A. ?
B. 
C. - 
D. -4
Answer: C
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An x-ray of a leg bone fracture was made with an FFD of 80cm and an OFD of 16cm. On the x-ray film a crack in the bone measured 6.25cm in length. What is the actual length of the crack in this bone?
A. 0.2cm B. 6.25cm C. 5.0cm D. 7.8cm
The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Evaluate the expression using the given values.
+ 
x = -8, y = 2
A. 10 B. 6 C. -6 D. -10
Evaluate the function for the indicated input and interpret the result.A(2, 22) where A(x, y) = 
. (A computes the average of two numbers x and y.)
A. A(2, 22) = 24 The average of 24 is the two numbers 2 and 22. B. A(2, 22) = 24 The average of two numbers 2 and 22 is 24. C. A(2, 22) = 12 The average of two numbers 2 and 22 is 12. D. A(2, 22) = 23 The average of two numbers 1 and 11 is 23.