Ineed on my homework number 8. part a and part b

What is the product? (x2+3y+7) [yy+1)

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

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.