A sporting goods store is having a 15% off sale on all items. Which functions can be used to find the sale price of an item that has an original price of x? You may choose more than one correct answer.
y = .85 x
ƒ( x) = 1.15 x
Sale = Original - 15
ƒ( x) = x - .15 x
Sale = Original - .15(Original)

i don't have the answer rn but go to math papa. it shows the steps and the answer. hope this : )

step-by-step explanation:

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are