Using the data set below what is the mean 4,6,6,7,7,8,8,8,9
A 9
B 7
C 63
D 8​

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.