Answer:
Step-by-step explanation:
y=mx + c
c is the y-intercept is $5 charges for shipping
y is the total money=$100
m is the number of polish to be bought
x is price for each polish=$8
95=8m+5
Collect like terms
95-5=8m
90=8m
Divide both sides by 8
90/8=8m/8
11.25=m
m=11.25