Idon’t get this geometry work, someone can me? or explain? because my teacher does not know how to teach this!

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.

Ineed with number 17 i don’t get it at alll

Which of the following is the correct ratio for converting kilograms to grams