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 2.9 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) = 5.8?t2
B. (A ? r)(t) = 8.41?2t
C. (A ? r)(t) = 2.9?t2
D. (A ? r)(t) = 8.41?t2
Answer: D
Mathematics
You might also like to view...
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m B. 21 + m C. 21 + 7m D. 21 + 3m
Mathematics
Solve for the base. Round to the nearest cent.Part: $132,311.00 Rate of increase: 8.2%
A. $122,283.73 B. $143,160.50 C. $132,311.00 D. $122,383.73
Mathematics
Find the absolute value.
A. 
B. 0
C. 
D. 
Mathematics
Multiply.
A. 9x2 - 
B. 3x2 - 
C. 9x2 + 
D. 9x2 - 
x - 
Mathematics