How to simplify expressions with exponents calculus assume x > 0.

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 olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Which of the following contains a variable?