Is 4x+1=f(x) a quadratic function?

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.