I set up an inequality where x equals the number of hours. So far Acme movers would be 280+30x and for Hank's movers, it would be 65x. The inequality would be 65x<280+30x. To get x all to one side of the inequality, I subtracted 30x from both sides. Now it's 35x<280. Now I divide both sides by 35 to solve for x. x<8. So for any amount of time less than 8 hours, it is cheaper to hire Hanks Movers.