Find the derivative.y = 
+ 
A. y ' = 10 cos x - csc2 x
B. y ' = -10 csc x cot x + sec2 x
C. y ' = 10 csc x cot x - sec2 x
D. y ' = 10 csc x cot x - csc2 x
Answer: B
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Solve.20x(x - 5) + 40 = -55(2x - 1) + 15
A. -5, 
B. -6, 1
C. - 1, 
D. - 
, 1
Find the intercepts of the function f(x).f(x) = (x + 4)(x - 3)(x + 3)
A. x-intercepts: -4, -3, 3; y-intercept: -36 B. x-intercepts: -3, 3, 4; y-intercept: -36 C. x-intercepts: -3, 3, 4; y-intercept: 36 D. x-intercepts: -4, -3, 3; y-intercept: 36
Establish the identity.cos(4?) = cos4 ? - 6 sin2 ? cos2 ? + sin4 ?
What will be an ideal response?
Solve the problem.The average cost for a company to produce x thousand units of a product is given by the functionA(x) = 
Use A'(x) to estimate the change in average cost if production is increased by one thousand units from the current level of 16 thousand.
A. Average cost will decrease by $4 B. Average cost will increase by $64 C. Average cost will increase by $4 D. Average cost will decrease by $64