Solve the problem.If f(?) = sin ? and f(a) = - 
, find the exact value of f(a) + f(a + 2?) + f(a + 4?).
A. 
B. - 
C. - 
+ 6?
D. - 
Answer: D
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Express the relationship between a small change in x and the corresponding change in y in the form 
.f(x) = x
A. dy = 
dx
B. dy = 
dx
C. dy = 
dx
D. dy = 
dx
Solve the problem by integration.Find the area bounded by y = csc 3 x cot x, x = 
, x = 
, and y = 0.
A. 6
B. 
C. 
D. 4
Solve the problem.Devon purchased tickets to an air show for 8 adults and 2 children. The total cost was 
. The cost of a child's ticket was 
less than the cost of an adult's ticket. Find the price of an adult's ticket and a child's ticket.
A. adult's ticket: $26; child's ticket: $22 B. adult's ticket: $25; child's ticket: $21 C. adult's ticket: $23; child's ticket: $19 D. adult's ticket: $24; child's ticket: $20
Solve.The height h in feet of a baseball after t seconds is given by 
At what value of t is the height of the baseball 132 feet?
A. 5 sec B. 2.5 sec C. 10 sec D. 1.25 sec