Select all that apply. Zack is taking a test in which he answers questions at a rate of question per minute. If Q represents questions and M represents minutes, which of the following equations describe this rate relationship? Select all that apply.

A. Q = 3 × M
B. Q = × M
C. M = × Q
D. M = 3 × Q

How do you convert 1.27 to a percentage

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103