Sam weighs 190 lbs. and is working out to lose 30 lbs. He plants to follow an exercise program for 12 weeks. How much will he have to lose per week to achieve his goal?

hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb