I need answer please i keep getting wrong

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

Find the value of x in the diagram below. select the best answer from the choices provided

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?