Solve the problem. Round money amounts to the nearest cent.The vehicle maintenance man puts 360 mL of oil into the car engines every day. How many liters are needed for a three-month (30 days/month) supply?
A. 3240 L
B. 32,400 L
C. 32.4 L
D. 324 L
Answer: C
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Find the area of the region specified in polar coordinates.one petal of the rose curve r = 9 cos 3?
A. 
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B. 
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C. 
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D. 
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Find the maximum and minimum values of the function and the values of x and y for which they occur.P = 6x + 7y, subject to2x + 3y ? 12,2x + y ? 8,x ? 0,y ? 0.
A. Maximum: 32 when x = 3 and y = 2; minimum: 0 when x = 0 and y = 0 B. Maximum: 28 when x = 0 and y = 4; minimum: 0 when x = 0 and y = 0 C. Maximum: 28 when x = 0 and y = 4; minimum: 24 when x = 4 and y = 0 D. Maximum: 24 when x = 4 and y = 0; minimum: 0 when x = 0 and y = 0
Solve the problem.The total number of cars sold at a used car lot for the years 1996 and 1997 was 616. The number of cars sold in 1997 was 3 times the number of cars sold in 1996. How many cars were sold in 1997?
A. 153 B. 462 C. 466 D. 162
Find the second-order partial derivative.Find fxy when f(x,y) = 8x3y - 7y2 + 2x.
A. -14 B. -28 C. 24x2 D. 48xy