PLease help really!!!!!!!!!

I have forgot all the formulas, please help with steps, thanks

Q1.Consider the region enclosed by y=(x-4)^2 and y=9 .
Find the volume of the solid generated by
(a)Revolving the region about the x-axis.
(b)Revolving the region about the line y=-1.
(c)Revolving the region about the y-axis.
(d)Revolving the region about the line x=1.

Q2.Find the simple regression line of y on x, where
all i below are from 1 to 100
sum(x(i))=180, sum(y(i))=30, sum((x^2)(i))=1000, sum((y^2)(i))=750,
sum(x(i)y(i))=-150

Thanks again.