Find f'(x) for the function, then find f'(x) for the given x.g(x) = - 
, g'(-2)
A. g'(x) = 2; g'(-2) = 2
B. g'(x) = -2; g'(-2) = -2
C. g'(x) = - 
; g'(-2) = - 
D. g'(x) = 
; g'(-2) = 
Answer: D
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Evaluate the expression.71
A. 7
B. 1
C. -7
D. 
Choose the graph that matches the equation. -5x + 20y = -5
A. 
B. 
C. 
D. 
Solve the problem.An electronics store determines the following demand function for phones of a particular type 
where q = the number of phones sold per day when the price per phone is x dollars. Find the elasticity.
A. E(x) = 
B. E(x) = 
C. E(x) = 
D. E(x) = 
Using calculus, it can be shown that if a ball is thrown upward with an initial velocity of 16 ft/s from the top of a building 256 ft high, then its height h above the ground t seconds later will be h = 256+16t-16t². During what time interval will the ball be at least 64 ft above the ground.
What will be an ideal response?