Solve for r in v=pi r squared h i need im in algebra 1

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

What is not true about kl and mn? what is mn? (show your work)

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