A quick way to do this is by recalling the fact that

, so the largest value that

alone (for any real value of

) can take on is 1.
This means

, and so

.
So the maximum value of this function is 7.
Answer:
length =√area use this formula
7 is a real number .......
In order to find this out, we just needed to find out which one has the same smallest fraction
25 / 35. Divided this by 5 and we will get 5/7 >>> smallest fraction
15/21 . Divided this by 3 and we also will get 5/7 >> smallest fraction
So the answer would be : B. 15/21
hope this helps
You have to multiplying first, then adding on 6 over negative 3 as a fraction. The parentheses it will be multiplying.
(4)(9)+6/-3
= 34.
It will help you.
Have a great day!
-Charlie