Question

If the y intercept remains the same and the slope is doubled, what will be the x intercept? This is with y=-5/2x+3.

Answer 1

Double the slope. So -5/2 becomes -5.
Then y=-5x+3
Set y=0 and solve for x.

Answer 2

A sphere has a volume of 7235 cubic centimeters and a surface area of 1809 square centimeters. What is the radius of the sphere?

Answer 3

Well you can use either the surface area or volume to solve for radius. V=(4/3)*pi*r^3
SA = 4*pi*r^2.
You are given V and SA. r is then the only unknown.