Find the midpoint between (8,1) and (-1,3).

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?

Which graph represents the function f(x)=4[x]?

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )