Question

The price per bushel of corn is shown, in $ per bushel, for each of the first five months of last year. Approximately, what is the difference between the highest and lowest price for this time period? 5.5 and 2

Answer 1

I'm assuming you mean that "5.5 and 2" are the highest and lowest prices. The difference means how much is in between, so you subtract one from the other to find this.
5.5−2=3 So you're answer would be $3.00.