Solve.The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for 7 hours and uses 140 gallons of fuel. Find the number of gallons of fuel that the helicopter uses to fly for 4 hours.
A. 80 gallons
B. 100 gallons
C. 245 gallons
D. 5 gallons
Answer: A
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Use the percentage method of withholding to find the federal withholding tax, a 6.2% FICA rate to find the FICA tax, and 1.45% to find the Medicare tax. Then find the net pay for the employee. Assume that the employee has not earned over $110,000 so far this year.
Fred Jones has gross earnings of $4723.08 biweekly. He is married and has 2 withholding allowances.
A. $3987.56 B. $5097.29 C. $3626.25 D. $4361.77
Write the expression in the form bi, where b is a real number.
A. 3i
B. -3
C. -3i
D. 3
If 
, find 
.
?
A. 45 B. -27 C. 39 D. 3 E. -21
Solve.An airplane travels 400 miles against the wind in 5 hours, and makes the return trip with the same wind in 2 hours. Find the speed of the wind.
A. 200 mph B. 140 mph C. 60 mph D. 80 mph