Given the system of equations, what is the solution? x + 2y = 7

x - 2y = -1

A. {(-4, 6)}
B. {(-8, -12)}
C. {(3, 2)}

5x + 7y - +6w = 0 -2x +By+ 8z - 5w = -2 3x +2y+ 4 - 0w = -3 5 | - 0 (A) A = | -2 8 , X= -- 5 (B) A = | -2 ਤੇ 8 W- B = 3 2 4 2 4 9 | 0 5 (C) A = | -2 [ 3 .

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: