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
Answer: D
Mathematics
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Solve the problem.Michael's bank contains only nickels, dimes, and quarters. There are 58 coins in all, valued at $4.70. The number of nickels is 2 short of being three times the sum of the number of dimes and quarters together. How many dimes are in the bank?
A. 13 dimes B. 43 dimes C. 7 dimes D. 8 dimes
Mathematics
Simplify the expression involving rational exponents.1254/3
A. 78,125 B. 15,625 C. 625 D. 3125
Mathematics
Find the exact value of the following expression without using a calculator.csc 
A. -
B. - 
C. -
D. - 
Mathematics
Subtract.
- 
A. 
B. - 
C. 
D. - 
Mathematics