You and some friends went out to t. g.i. fridays for dinner. you ordered a root beer, sweet potato fries and cheese quesadillas. the total bill came to $21.86. your dad told you many times that it's important to leave a good tip about 20%. you have $26.00 in your wallet. can you leave a 20% tip? how much would the total be if you left a 20% tip? can you cover the cost?