The pair of points is on the graph of an inverse variation. find the missing value.

(5, 4) and (x, 7)

The missing value of

Step-by-step explanation:  

The inverse variation is given by:  

Now convert this into an equation we must multiply the constant variation k we get,

To find the value of k;

use the coordinates (5,4) , where x =5 and y =4

then,

or

On Simplify, we get:

k = 20

the equation become:  

When y =7 we have;

(x ,7) =

therefore, the missing value x is,

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:

what is the model?

step-by-step explanation: