ANSWER

EXPLANATION
Let

be the equation.
We can choose any two ordered pairs to determine the equation of the relation.

We find m using the formula;


The equation becomes

When x=6, y=15.
This implies that,




The equation of the relation is therefore,

$79.75*0.2= 15.95
$79.75-15.95= $63.80
63.80+15.95= $79.75
Answer= $15.95
Answer:
x = negative 9/4
Step-by-step explanation:
-2x-11=6x+7
-2x-11+11=6x+7+11
-2x=6x+18
-2x-6x=6x+18-6x
-8x=18