The answer is 1705 hope this helped
Practical domain is "the realist" it is used in real situations
A is correct
Exact=56.5 rounded would be 57 because you can't make half a birdhouse.
20.50 into a fraction is 41/2. Since 20 is already a whole number, there is no need to convert it. Since .50 is a decimal, I have to convert it to a fraction, which is 1/2. I end up with the mixed number 20 1/2. Since I need to convert it to a fraction, I have to simplify it. 20 1/2 written as a fraction greater than 1 is 41/2.
Hope this helped !!