Rachel has a coupon for 15% off her total lunch bill before tax. if t. represents the total cost of her lunch items before tax, which of these expressions represents the saving from the coupon?

For this case we have the following variable:

The total discount percentage is 15%.

For this you must write the amount that is saved by the coupon.

We have then:

Rewriting the expression we have:

The expression that represents the saving of the coupon is:

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

hi,

6x times 4 is 24x and 5 times 4 is 20, so the answer is 24x+20.

hope this and for a little humor i am groot.