HELP DONT BE SCARED

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16