Solve the problem.Each gallon of shingle stain covers 120 square feet. How many gallons are needed to cover 840 square feet?
A. 8 gallons
B. 5 gallons
C. 7 gallons
D. 6 gallons
Answer: C
Mathematics
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Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function decreases most rapidly.
A. -2 B. -1 C. -4 D. -6
Mathematics
Solve the given equation for x.y = cos (x + 12)
A. x = cos-1 y + 12 B. x = cos-1 (y - 12) C. x = cos-1 (y + 12) D. x = cos-1 y - 12
Mathematics
Convert the mixed number into an improper fraction.17
A. 
B. 
C. 
D. 
Mathematics
Multiply. Leave your answer in exponent form.y ? y2
A. y3 B. 2y3 C. 2y2 D. y2
Mathematics