5t+5=5t-4 son's homework. can anybody me out here?

The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

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?