Help me solve 5 and 6 please someone

5) 1

6) -13

Step-by-step explanation:

f(x) = -x -8                                    g(x)= x^2 +8x -15

f(1) = (-1 -8) +10                             g(-9)= (-9)^2 +8(-9) -15 -7

f(1) = 1                                          g(-9) = -13

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: