Which quadratic rule represents the data in the table?

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?

Find the solution set of this inequality. select the correct graph. |8x+16|> 16

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2