Solve.The sales of a mature product (one which has passed its peak) are given by the function 
where t is time in years. Find the sales after 12 years if 
and 
A. 2313
B. 20,878
C. 1894
D. 1157
Answer: A
Mathematics
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Evaluate the double integral over the given region.
R = {(x, y): 0 ? x ? 1, 0 ? y ? 3}
A. 
ln 2
B. ln 2 ln 4
C. ln 8
D. 4 ln 2
Mathematics
Solve the problem. Write the answer in lowest terms.A nursery supplier has 
acre of land, and he purchases another 
acre. He wants to plant trees and shrubs, and he has already planted 
acre with shrubs. How much land is left to plant trees?
A. 
acre
B. 
acre
C. 
acre
D. 2
acre
Mathematics
Factor completely. If the polynomial cannot be factored, say it is prime.18x2 - 78x - 60
A. (18x + 12)(x - 5) B. 6(3x - 2)(x + 5) C. 6(3x + 2)(x - 5) D. prime
Mathematics
Evaluate the expression.(-2)0- 20
A. 0 B. -1 C. 1 D. 2
Mathematics