Circumference of a circle is 2 x pi x r
I think is 2x+y=-5 the answer
The slope intercept IS y=2/5x+7
Interest=1250-880=370
I=PRT
P=principal
r=rate in deicmal
t=time in years
1 month so t=1/12
P=880
I=370
370=880*r*1/12
370=220/3r
times both sides by 3
1110=220r
divdie both sides by 220
5.04545=r
505% interest