Using 7,5,6, and 3 write an equation using parentheses that equals 75

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?

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Icould really use some with this question.