Help me with this answer please

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

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5