Find a degree 3 polynomial having zeros -3, 3 and 7 and the coefficient of x^3 equal 1.

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?