I need step by step for this math problem asap

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

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.

Can someone me with these two circle theorem questions asap?