Decide if the answer is reasonable or unreasonable by using front end to estimate the answer. If the exact answer is not reasonable, find the correct answer.80.1 ÷ 77.8 = 10.3
A. Unreasonable, should be 1.03
B. Unreasonable, should be 0.0103
C. Unreasonable, should be 0.103
D. Reasonable
Answer: A
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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. 376 B. 125 C. 94 D. 188
Find the product.(x + 3)2
A. x + 9 B. 9x2 + 6x + 9 C. x2 + 9 D. x2 + 6x + 9
Solve the problem.The information in the chart gives the salary of a person for the stated years. Model the data with a linear function using the points 
and 
A. y = -1242x + 23,500 B. y = 1000x C. y = 28.2x + 23,500 D. y = 1000x + 23,500
Graph the hyperbola.y2 - 9x2 = 144
A. 
B. 
C. 
D. 