Solve the problem.A stone is thrown into a pond. A circular ripple is spreading over the pond in such a way that the radius is increasing at the rate of 2.6 feet per second. Find a function, r(t), for the radius in terms of t. Find a function, A(r), for the area of the ripple in terms of r. 
A. (A ? r)(t) = 2.6?t2
B. (A ? r)(t) = 5.2?t2
C. (A ? r)(t) = 6.76?2t
D. (A ? r)(t) = 6.76?t2
Answer: D
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Solve the problem.A paper boy collected $6.55, part in nickels and part in dimes. If the number of nickels was 6 more than one-half the number of dimes, how many nickels were there?
A. 60 nickels B. 41 nickels C. 50 nickels D. 31 nickels
Provide an appropriate response.Simplify: (3 + 7i) - (2 + i)
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.If 2x2 + 3y2 = 8, use implicit differentiation to find 
and simplify your answer. Note: 
should not appear in your final answer.
What will be an ideal response?
Determine whether the infinite geometric series converges or diverges. If it converges, find its sum.3 - 1 + 
- 
+ . . .
A. Converges; 
B. Converges; - 1
C. Converges; 2
D. Diverges