122. write the equation of the line that is
perpendicular to y = x-5 and passes through
the point (12,-1).

When a line is given in the form

The slope of the line is m. So, in this case, the slope of is 1.

Given a slope , you find the slope of a perpendicular line by imposing

So, if the given line has slope 1, a perpendicular line has slope given by

and thus

So, we want a line with slope -1 and passing through (12,-1). Using the fomula

we get

i need more information

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: