What is the answer to 6/7 simplified

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.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Divide. write in simplest form 41/6 divided by 10