8. Bianca is shopping around town in order to purchase a computer that is regularly priced at $800. Use the details below to mark each statement as true or false.
A
15% OFF
B $150
1
REBATE
OFF
4
At store A, the computer would cost $680.
By purchasing at store C instead of store B. Bianca will save $50.
Store B and store A offer equal discounts.

i need help.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

answer: 1+1

step-by-step explanation: 1+1 is at least 2