The number z times 4.5 is 6.75.

which equation shows the relationship between z, 4.5, and 6.75 and then find the value of z.

6.75z = 4.5

z = 0.6¯

z4.5=6.75

z = 30.375

4.5 + z = 6.75

z = 2.25

4.5z = 6.75

z = 1.5

23

step-by-step explanation:

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: