If y = 4 when x = -4 find y when x = 7

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

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?

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent