(7x2+ 4x – – 3x + 15) add or subtract by steps

(7 x 2 + 4x- 26)-(-7 x 2 - 3x + 15)

(7 x 2 + 4x -26) (7 x -2 + 3x - 15)

(14 + 4x -26) (-14 + 3x - 15)

(4x - 12) (3x - 29)

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: