Dinner at chili's came to 27.00. You want to leave a tip of 15%,how much money will you leave for just the tip

Hi my sisters and brothers can tell me the answer because i don’t understand the question

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

What sums are equal to 6/12? choose all answers that are correct a.6/12+6/12+6/12+6/12+6/12+6/12 b.2/12+1/12+1/12+2/12 c.5/12+1/12 d.1/12+1/12+1/12+3/12 plz : )