Awater park charges a rental fee plus an hourly fee for inflatable inner tubes. the total costs of 3, 4, and 5 hours are $8.00, $8.75, and $9.50, respectively. what is the cost of the hourly fee? what is the cost of the rental fee?

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.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

What are the triple angle formulas? is it related to double angle identities?