325 ÷12.5 = 26
260÷26 = 10
so you would give 10ml
699 is closet because as you subtract every number from 750, the smallest answer given is the closest to the number you started with.
The slope is 1/3 because in order to get from point (3,1) to (6,2) you need to rise 1 and go over 3
The answer is the last one; to express very large or small numbers.
We use it so we can show big or very small numbers in an easier way.
