Solve.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 20 mph
B. 50 mph
C. 40 mph
D. 80 mph
Answer: A
Mathematics
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Solve the problem.A nail 4
inches long is driven into a board 
thick. How much of the nail protrudes from the other side of the board?
A. 1 in.
B. 3
in.
C. 7
in.
D. 
in.
Mathematics
Solve.Rosey borrows $8600 and agrees to pay it back in 9 years. If the simple interest rate is 8%, find the total amount she pays back.
A. $6192 B. $14,792 C. $61,920 D. $70,520
Mathematics
Evaluate the expression for the given values of the variables, if possible.-
, for a = 15, b = 9
A. -14 B. 11 C. 12 D. -12
Mathematics
Solve.It is suspected that an incorrect resistor was put into a circuit. The correct resistor should be 
A voltage measurement is taken and found to be 
The current is measured to be 
Is the resistor correct?
A. Yes B. No
Mathematics