Which expression is equivalent to (10 + 7r - r²) + (-6r² - 18 + 5r)?​

The jones farm has 24 cows that each produce 52 quarts of milk a day. how many quarts are produced each day altogether

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?