Help! I need help with 1.2.4 journal on problems 7,8,9!!

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)