Answer:
a). 0
Step-by-step explanation:
f(1) = 1 - 1
= 0
It depends what your trying to get close to. If your trying to get close to a number that is easier to work with 1 4/8 is good because its the same as 11/2 but the closest whole number is 1.
A number when you round to the nearest hundred and tens is the is is the number 200