Please help I will choose brainliest

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

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?

Three times the sum of a number and seven is negative thirty-six. what is the number?