(3+2)x(3+4) need help

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

How can you tell when x and y are not directly proportional?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?