he intercept for a straight line is 12. If the value of the independent variable is 3, then the value of the dependent variable would be 18. The slope of this line is

2

Step-by-step explanation:

The equation of a line is given as

y = mx + c where m is the slope, c is the intercept, y is the dependent variable while x is the independent variable.

As such, given that the intercept is 12, the independent variable is 3 and the value of the dependent variable would be 18

substituting into the equation of a line

18 = m(3) + 12

subtract 12 from both sides

18 - 12 = 3m

6 = 3m

Divide both sides by 3

6/3 = 3m/3

2 = m

m = 2

The slope is 2

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:

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm