How can you find approximations of square roots?

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?

What is the solution of sqrt x+2-15=-3

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "