Astore is having a sale. sally wants to buy an $80 item at the store. which of the following equations gives the discount price, y, in dollars, of the $80 item after a discount of x percent? a. y = 80 + 0.8 x b. y = 80 – 1.25 x c. y = 80 + 1.25 x d. y = 80 – 0.8 x

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

21

jk it's 20

step-by-step explanation: