Solve the problem.The number of cows that can graze on a ranch is approximated by C(x,y) = 9x + 5y - 8, where x is the number of acres of grass and y the number of acres of alfalfa. If the ranch has 75 acres of alfalfa and 90 acres of grass, how many cows may graze?
A. 1177 cows
B. 1117 cows
C. 1185 cows
D. 1125 cows
Answer: A
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Find the volume of the solid generated by revolving the shaded region about the given axis.About the y-axis
A. 20 - 5?
B. 20? - 5?2
C. 10? - 
?2
D. 5? + 5?2
Solve the problem.A country has five states with populations as given in the table below and needs to apportion 250 seats in the legislature. Use the Adams Method to apportion the seats. 
A. 
B. 
C. 
D. 
Use dimensional analysis to convert the quantity to the indicated units. If necessary, round the answer to two decimal places.10 ft to in.
A. 30 in. B. 120 in. C. 360 in. D. 40 in.
Postal regulations specify that the combined length and girth of a parcel sent by parcel post may not exceed 120 in. Find the dimensions of the rectangular package that would have the greatest possible volume under these regulations. (Hint: Let the dimensions of the box be x'' by y'' by z'' (see the figure below). Then, 
, and the volume
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. Maximize 
.)
?
?
A. x = 20 inches, y = 40 inches, z = 20 inches, V = 16,000 cubic inches
B. x = 20 inches, y = 20 inches, z = 17 inches, V = 6,800 cubic inches
C. x = 22 inches, y = 40 inches, z = 22 inches, V = 16,000 cubic inches
D. x = 22 inches, y = 39 inches, z = 17 inches, V = 14,586 cubic inches
E. x = 22 inches, y = 40 inches, z = 17 inches, V = 14,586 cubic inches