Okay so all you have to do is add all of them together. Which I got 46. But then you need that question mark one. Use 17 cause that’s the length of the other side and subtract it by 5 because that’s how much less the other side is so 12. Add 12 to 46 and you get 58.
If the first function is .. h(x) = 2^x it will be the one that grows the fastest. The exponential function with the largest base value will grow faster than any polynomial.