How can we write the sum of 13 and 17 quadrupled as a numerical expression

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?