Answer:

Step-by-step explanation:
the general equation of a circle is

with (h,k) being the centre of the circle and r the radius
Answer:
-72
Step-by-step explanation:
9.95(0.75)(1.06)=7.91
The .75 is the coupon and 1.06 is the sales tax.
Sender would be 4 x 7 divided by 15