What is this answer? -1/4-(-3/5)

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.

Find the quotient. 50a2 – 98b2 -5a +7b

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why