tommy is a valet driver. He parks people’s cars and brings them back when people are ready to leave. He gets paid $10 per hour plus tips. What is a tip? ASAP!!!

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

What are “like terms”? why can we only add like terms?