A store sells memory cards for $25 each. A) The markup for each memory card is 25. How much did the store pay for 50 memory cards? B) The store offers a discount when a customer buys 2 or more memory cards. A customer pays $47.50 for two memory cards. What is the percent of discount? C) How much does a customer pay for three memory cards if the store increases the percent of discount in part b by 2%? Please help! (explination as well please!) :)​

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.