If the selling price is $90 and the rate of the sale tax is 3 percent what would be the sales tax and the total cost?

sales tax:$2.70 total cost: $92.70

Step-by-step explanation:

You multiply 90 by 3% or 0.03 and add that to the original cost

17

step-by-step explanation:

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x