66.875 = 66 7/8 as a mixed number
His mistake was in multiplying the 3 with the 12. He should have divided it from the 12 because that would have gotten rid of the 3 with the variable. It would also lead to the correct answer, which is b=4
Divide 5 and the amount of items
The domain of a function is the set of all possible inputs for the function.
Answer:
answer is 100 pages per hour
