Simplify.(w9z)4(w3z8)
A. w39z12
B. w12z12
C. w16z12
D. w108z32
Answer: A
Mathematics
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Solve the problem.A stone is thrown into a pond. A circular ripple is spreading over the pond in such a way that the radius is increasing at the rate of 2.1 feet per second. Find a function, r(t), for the radius in terms of t. Find a function, A(r), for the area of the ripple in terms of r. 
A. (A ? r)(t) = 4.41?t2 B. (A ? r)(t) = 4.2?t2 C. (A ? r)(t) = 2.1?t2 D. (A ? r)(t) = 4.41?2t
Mathematics
Use the x- and y-intercepts to graph the linear equation.5x = y - 8
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If a person is randomly selected, find the probability that his or her birthday is not in May. Ignore leap years.
A. 
B. 
C. 
D. 
Mathematics
In the expression 3x + 4:
a. What is the literal term? b. What are the real numbers?
Mathematics