Find the value of d2y/dx2 at the point defined by the given value of t.x = 3 sin t, y = 3 cos t, t = 
A. -2
B. 2
C. - 
D. 
Answer: C
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Solve the problem.Devon purchased tickets to an air show for 7 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: $12; child's ticket: $9 B. adult's ticket: $15; child's ticket: $12 C. adult's ticket: $13; child's ticket: $10 D. adult's ticket: $14; child's ticket: $11
Solve the equation for ? if 
. Give your answer in degrees.
?
What will be an ideal response?
Divide.
÷ 
A. 
B. 33
C. 
D. 
Find the indicated coordinates.Point P has coordinates (9, 2). Find the coordinates of Q so that the origin is the bisector of the line segment joining P and Q.
A. (-9, -2) B. (-9, 2) C. (2, 9) D. (9, -2)