Determine the best method to solve the system of equations. then solve the system. -5x + 3y = -18 2x + 2y =4

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Math i have no idea how to do a and b