Simplfy... PLZ HEL 3x^2 - 4x + 8 + 5x^2 + 9x - 10

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?