What two numbers can i use to multiply up to positive 5 and add up to positive 2?

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Pls the last one and it has to be like number 6

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?