Ialso got this one wrong as well can someone tell me what i'm doing wrong so i can change it

The answer is:  [D]:  "Subtract 5 from 10" .

Explanation:

Use the correct order of operations, according to the mnemonic: 
         "PE MD AS".

The "P" stands for "parentheses", which takes top (first priority); and there are values in parentheses in this expression—specifically, the "(10 - 5)" .  So the first step is to "subtract 5 from 10" —which is:  "Answer choice: [D]".
    Your error was starting at the beginning of the problem; and not using the "order of operations".

Where are the functions?

Jim has run 5/6 of a mile so far. i hope that answers your question! good luck : )