How to find a line that passes through two points?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.