Sue and Chris went to the electronic store to purchase movies. Chris bought 3 Blu-
ray discs and 2 DVDs for $72. Sue bought 4 Blu-ray discs and 1 DVD for $76.
3b + 2d = 72
4b + 10 = 76
How many dollars did one Blu-ray disc cost?

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

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.