50 people purchase item 5( the item 5 cost $18.94). seven of these customers use a coupon for 15% off. how much money do you make off the sales of item 5?

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

step-by-step explan mxfcg'k; uafwgzfgjhklhgation:

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

the correct answer is the last option