Beth put $8,000 in a savings account. At the end of a year the account had earned $720 in interest. What was the
yearly interest rate on the account?

9%

Step-by-step explanation:

8000 x 9%= 720

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