Isuck at this stuff can someone me out? you!

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?