Find the area of a square with a side measuring 7x^4y^3

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.

Which of the following is not a subset of {1,2,3}?

Ineed the solution to this problem and the steps.