400 quarters
$1 = 4q
4q • 100 = 400
400q=$100
We want to calculate the following
Using the properties of exponents, we have that
So we have
So, if factor 10^-4 on the right side, we have
Note that
Then,
So we have that
13 1/4 is the answer
9 7/8 + 3 3/8
12 10/8
13 2/8
13 1/4 (simplified)
2/5, 1/10, and 1/20 are all less than 1/2