Simplify the following expression. A.
76
B.
68
C.
-20
D.
20

3. solve the given inequality and graph the solution on a number line.

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?

Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1