The local school board wants to get parents to evaluate teachers. they select 100 parents and find that 89% approve of their child’s teacher

Exponential functions increase much faster than linear functions. We can see this clearly if we plug in some values. Let's go a couple of values of x ahead of the given values.

If x = 3, g(x) = 25. On the other hand, x = 3, f(x) = 27. 
If x = 4, g(x) = 35. On the other hand, x = 3, f(x) = 81. 

Therefore, since Max's savings are represented by f(x), his savings obviously grow much faster. Thus, the answer is C, Max will save more that tommy.