Suppose a calculator manufacturer has the total cost function 
and the total revenue function 
, where x represents the number of calculators sold. What is the equation of
the profit function, 
, for the calculator manufacturer?
?
A. 
B. 
C. 
D. 
E. 
Answer: D
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Solve the problem.An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the curve 
- 5 ? x ? 5, about the x-axis (dimensions are in feet). If a cubic foot holds 7.481 gallons and the helicopter gets 3 miles to the gallon, how many additional miles will the helicopter be able to fly once the tank is installed (to the nearest mile)?
A. 188 B. 125 C. 94 D. 376
Use the power rules for exponents to simplify. Write the answer in exponential form.
7 (q ? 0)
A. 
B. 
C. 
D. 
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400
Find the quotient of the monomials.
A. 8 B. 8k2 C. 3k2 D. 3k