What is 2y=3x+4 i do not understand how to do this

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect