Solve the problem.A car is traveling at 39 mph. If its tires have a diameter of 28 inches, how fast are the car's tires turning? Express the answer in revolutions per minute. If necessary, round to two decimal places.
A. 2941.71 revolutions per minute
B. 936.37 revolutions per minute
C. 449.19 revolutions per minute
D. 468.19 revolutions per minute
Answer: D
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Find the area of the specified region.Inside the lemniscate r2 = a2 sin 2?, a > 0
A. ?a2
B. 
C. 0
D. a2
Perform the indicated operation.(6x2 - 2x - 6) + (-2x2 - 2x - 8)
A. -12x2 - 2x - 14 B. 4x4 - 4x2 - 14 C. 4x2 - 2x - 14 D. 4x2 - 4x - 14
Provide an appropriate response. A sandbox is a square of width 5 feet. How many square feet does the sandbox cover?
A. 25 ft2 B. 5 ft2 C. 20 ft2 D. 10 ft2
Provide an appropriate response.Identify the symbolic interpretation of the statement: If four cans of water are added to juice concentrate, there are twelve cans of liquid in all. How many cans of juice concentrate are in the mixture?
A. x - 4 = 12 B. x = 4 + 12 C. 4x = 12 D. x + 4 = 12