Need some help please

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Yvaries directly as x. y =90 when x=6. find y when x=13

4. bob solved the inequality problem below incorrectly. explain his error and redo the problem showing the correct answer. −2x + 5 < 17 −2x + 5-5 < 17-5 -2x/-2 < 12/-2 x < -6