A sporting goods store bought a ski set at a cost of $. Later, the ski set was marked down 30% from its selling price and then marked down another 20%. The total markdown is the greatest possible markdown without the store losing money. Find the original selling price. The original selling price of the ski set was $
nothing. (Round to the nearest dollar as needed.)

could

step-by-step explanation:

u send me a picture of ur work

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

here is a big fat

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0