Answer:
one quarter (.25) + three dimes (.30) = .55
I believe 4^2/4^-2 would be equivalent to that expression
To say that n is at least 4 is to say that n is 4 or greater than 4.
As symbols, that is written as this: n ≥ 4
I could not get it to work with all of those numbers. The only number that caused an issue was 29. I used 28 instead and it worked. I'm not sure if 29 was a typo, but I couldn't get 29 to work.