Give a counter example for x^2>0, then x>0

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?