Round to the nearest tenth if necessary. 60% of 68 is what number?..

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.

The trigonometric ratios sine and secant are reciprocals of each other

Ineed to know the answer to this algebra question.