Write an expression for the calculation double 7, multiply 3 and 1 and then subtract the second number from the first 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.

What is the measure of ac? 5 units 13 units 26 units 39 units

How many solutions does the nonlinear system of equations graphed below have?