Sabrina is using an online calculator to calculate the outputs f(n) for different inputs n. the ordered pairs below show sabrina's inputs and the corresponding outputs displayed by the calculator:
(1, 6), (2, 11), (3, 16), (4, 21)
which of the following functions best represents the rule that the calculator uses to display the outputs?
f(n) = 5n − 1
f(n) = 5n + 1
f(n) = 4n + 3
f(n) = 4n − 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: