Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = 
; g(x) = 3x + 18
A. [0, ?)
B. (-?, ?)
C. (-?, -6] ? [0, ?)
D. [-6, ?)
Answer: D
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Express the relationship between a small change in x and the corresponding change in y in the form 
.y = csc(4x2 - 1)
A. dy = -8x csc(8x) cot(8x) dx B. dy = 8x csc(4x2 - 1) cot(4x2 - 1)dx C. dy = -8x csc(4x2 - 1) cot(4x2 - 1) dx D. dy = -4x2 csc(4x2 - 1) cot(4x2 - 1) dx
Solve the equation.3(y + 7) = 4(y - 8)
A. y = 53 B. y = -11 C. y = 11 D. y = -53
Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation S = A + B sin ?x/6, where x is the time in months, with x = 1 corresponding to January, A = 8500, and 
Determine the month with the greatest total sales and give the sales in that month.
A. March; $12,000 B. September; $5000 C. June; $8500 D. December; $12,000
Solve the problem.Doug and Inga can deliver 60 papers in 2 hours. How long would it take them to deliver 57 papers?
A. 1.9 hr B. 114 hr C. 2.9 hr D. 2.1 hr