An offshore oil well is leaking oil and creating a circular oil slick. If the radius of the slick is growing at a rate of 7 miles per hour, find the rate at which the area is increasing when the radius is 3 miles. (The area of a disc of radius r is 
.)
?
A. 
B. 
C. 
D. 
E. 
Answer: C
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Solve the problem.The Mathematics Department is holding an election for department chair. Each member ranks the candidates from first to third. The preference schedule below shows the results of the preliminary nonbinding ballots with candidates Clark (C), Jones (J), and Smith (S).
A second election is then held, which yields the following preference schedule:
If the winner is decided by sequential runoffs, is Fairness Criterion 3 satisfied?
A. no B. yes
Simplify.-|-11| - |-11 - 8|
A. 8 B. 30 C. -8 D. -30
Find the product.-12ax2(9ax3 - 8x2 + 4a)
A. -108a2x5 + 96ax4 - 48a2x2 B. -108ax3 + 96x2 - 48a C. -108a2x5 + 96ax4 D. -108a2x5 - 8x2 + 4a
An animal shelter has two purebred Labradors among the 48 dogs available for adoption. It is also known that 7/8 of the dogs are mongrels. How many of the dogs are purebreds? ? __________ dogs
Fill in the blank(s) with the appropriate word(s).