Use an algebraic equation to find the measure of each angle that is represented in terms of x​

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?

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation

Ineed with the quizzes in apex mathematics ii