The following figure shows the graph of revenue function
and cost function
. At which of the four
-values shown is the
profit largest?
?
A. B
B. C
C. D
D. A
E. Profit is largest at more than one x-value.
Answer: B
Mathematics
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Find the limit.
A. - 
B. 0
C. 
D. ?
Mathematics
Perform the indicated clock arithmetic.4 
11 (12-hr clock)
A. 12 B. Does not exist C. -7 D. 5
Mathematics
Factor by grouping.3y3 - 12y2 + 5y - 20
A. (3y2 + 5)(y - 4) B. (3y2 - 5)(y + 4) C. (3y2 + 5)(y + 4) D. (3y2 - 5)(y - 4)
Mathematics
Solve the problem.The radius, r, of a sphere can be found using the formula 
where S is the surface area. If the surface area is 5007 square inches, what is the radius? (Use ? ? 3.14 and round to the nearest tenth.)
A. 40.0 in. B. 35.4 in. C. 62.7 in. D. 20.0 in.
Mathematics