Someone help with these three ​

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

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers