Which expression is equivalent to 20x−8y? please help asap

Select the quadratic that has root x = 8 and x = -5

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4