Is f(x)=(3x-+2) linear or quadratic

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

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?

Sum of the interior angles of a pentagon