The long jump record, in feet, at a particular school can be modeled by f(x)= 18.1 + 2.2ln (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 14 years after record started being kept? round your answer to nearest tenth.

In the diagram below, dab and dac are adjacent angles. if mdac = 25°, what is mdab in degrees? what is mbac in degrees?

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)