If you double president reagan’s age at the time of his first inauguration(69) and subtract his age at the time he died the result is 45.how old was president reagan when he died?

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.