$2,100 principal earning 4% compounded annually, after 4 years

Which statement most accurately describe why the division property of exponents does not apply to the expression (-8)^2/(-3)^4

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?

Can (3,5 and square root 34) be sides on a right triangle?