He spent $52 on sandals. I got this by multiplying 65% by $80 and got $52.
In short answer $52
Is this what you were asking for?
The equation of a circle uses the following formula:

The center of the circle is given by (h,k). Therefore, h = -2, and k = -5. r = 1, so we can find the equation from the information given to us.
Plug in your values.


The equation of this circle is as follows:
Are there any decimals? Round to one digit: 7729 expressed in 1 digit = 8x10^-3