4x^2-12x+9.
4x^2+4x+1.,
1+12x+36^2

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.

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)