The sum of one-third of a number and 6 is 18. Find the number and explanation

36

Step-by-step explanation:

So first let's form our equation. Let's call our unknown number as 'x'.

(x) + 6 = 18.

Right? Since we are talking about the sum of one-third of a number and 6.

(x) = 12

x= 36.

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

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: