HELP ME PLS ANSWER THIS CORRECTLY AND YOU WILL GET BRAINLIEST AND THE 50+ EXTRA POINTS HELP PLEASE

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?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Plz hurry evaluate the expression a+b where a=8 and b=19