(10 points)question in picture

Which function has the same domain as y=2x

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.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?