Find the sum.59 + (-12)
A. 71
B. 47
C. -71
D. -47
Answer: B
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = -2 and x = 2. The cross sections perpendicular to the x-axis are circles whose diameters stretch from the curve 
to the curve 
A. 
?2
B. 
?2
C. 81?
D. 81?2
Solve the problem.A pick-up truck is fitted with new tires which have a diameter of 43 inches. How fast will the pick-up truck be moving when the wheels are rotating at 345 revolutions per minute? Express the answer in miles per hour rounded to the nearest whole number.
A. 44 mph B. 22 mph C. 7 mph D. 37 mph
Solve the problem.On a biology test, a student answered 25 questions correctly but did not pass. On a second attempt, the student answered 31 questions correctly. What was the percent increase in the number of questions answered correctly?
A. 6% B. 19.4% C. 24% D. 76%
Determine whether the graphs of the equations are parallel lines, perpendicular lines, or neither. 9x + 3y = 1215x + 5y = 23
A. Perpendicular B. Neither C. Parallel