Write an equation and solve each problem. seven less four times a number equals 13 , what is the number?​

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Ineed to know the answer to this algebra question.

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did