Roy buys a coat for $86.40, which includes an 8% sales tax. which equation could you use to find the cost of the coat, c, without the sale tax? select all aply.

The cost of coat without sales tax is $ 80 .  

Step-by-step explanation:

Given as :

The cost of coat with sales tax = $ 86.40

The rate of sales tax = 8 %

Let The cost of coat without sales tax = $ c

So, c + 8% of c = $ 86.40

Or, 1.08 of c = $ 86.40

Or, c =

∴  c = $ 80

Hence The cost of coat without sales tax is $ 80 .   Answer