Foot Locker is having a sale on shoes where all shoes are 15% off. If the shoes originally cost $90, which option shows the correct work to solve for the
discounted price? *
Turn 85% into the decimal 0.85 and multiply it by $90.90 x 0.85
O Subtract the percent from the total cost. $90-85%= $5
Turn 85% into the decimal 8.5 and multiply it by $90.90 x 8.5
Turn 85% into the number 85 and multiply it by $90.90 x 85

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.

The answer would be d