Write an equation in standard form of the line that passes through (3,-7) and (9,-2)

3(10x-y)-5(x-y^2) need this solved asap

What is the value of r of the geometric series?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank