C. Buying it a percent discount without sales tax.
Because of not having to pay $10, so it is awesome.
Plug n = 14 into the formula
= -5(14) + 90
= -70 + 90 = 20
Luis spent $9.50, in which:
Candy (y) = $1.25
Chips (x) = $0.50
$9.50 = 1.25y + 0.50x
Luis bought 10 snacks in all
10 = x + y
-----------------------------------------------------------------------------------------------------------------
You're answer:
x + y = 10
1.25y + 0.50x = 9.50
-------------------------------------------------------------------------------------------------------------------
hope this helps
Answer:
which number to solve, it kinda seem difficult