What is the solution (x, y) to the following system of equations below? 3x + 4y = -23
2y - x = -19

A. (-5,-2)
B. (3,-8)
C. (4,-6)
D. (9,-6)

What is the volume of the sphere shown below with a radius of 3?

Use the ratio test to determine whether ∑n=14∞n+2n! converges or diverges. (a) find the ratio of successive terms. write your answer as a fully simplified fraction. for n≥14, limn→∞∣∣∣an+1an∣∣∣=limn→∞.

The function p(x) = –2(x – 9)2 + 100 is used to determine the profit on t-shirts sold for x dollars. what would the profit from sales be if the price of the t-shirts were $15 apiece?