The figure shows the graphs of the cost and revenue functions for a company that manufactures and sells binoculars. Use the information in the figure to answer the question.
Is there a profit when 649 binoculars are produced?
A. Yes
B. No
Answer: B
Mathematics
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Solve. Use a calculator to approximate the irrational solutions to three places.(x + 1)2 = 13
A. 2.606 B. ±3.742 C. 2.606, -4.606 D. ±3.464
Mathematics
Solve the problem.On the day when Julie left for her vacation, the function that converted U.S. dollars to British pounds was f(x) = 0.54521x, where x is the number of U.S. dollars and f(x) is the number of British pounds. Find the inverse function.
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = x - 0.54521
Mathematics
Add or subtract. Assume all variables represent positive real numbers.
+ 4
+ 2
A. 15
B. 15
C. 6
D. 6
Mathematics
Divide.
A. 27 r 4 B. 31 C. 27 D. 27 r 8
Mathematics