Garvey’s electronics store is having a storewide sale. for a television set with a regular price of x dollars, a 15 percent discount is equal to $30. which of the following equations could not be used to determine x?

0.15x = 30

0.85x = x – 30

0.15x = x – 30

x – 0.15x = x – 30

0.15x=x-30

Step-by-step explanation:

Let

x> the regular price

we know that

15%=15/100=0.15

so

0.15x=30

x=30/0.15=$200

Verify each case

case a) 0.15x=30

x=30/0.15=$200

therefore

The equation could be used to determine x

case b) 0.85x=x-30

x-0.85x=30

0.15x=30

x=30/0.15=$200

therefore

The equation could be used to determine x

case c) 0.15x=x-30

x-0.15x=30

0.85x=30

x=30/0.85=$35.29

therefore

The equation could not be used to determine x

case d) x-0.15x=x-30

-0.15x=-30

0.15x=30

x=30/0.15=$200

therefore

The equation could be used to determine x

898.1666667

step-by-step explanation:

5389/6 = 898.1666667