You like to watch movies at the local cinema. You have two payment options. Option a is to buy a discount card which will cost you $160, and then $20 per movie. Option b is to pay $40 per movie. After how many movies will the total costs of the two options be the same? Write a system of equations in order to solve the problem.

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x

10 glasses of juice could be made with 5 carrots, 1,500 orange juice, 2,000 papaya juice.

both equations and proportions are better.