What does point P tell you about the situation

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?

Why do interests rates on loans to be lower in a weak economy than in a strong one

Which graph represents the function g(x) = |x + 4| + 2?