Answer:
The correct answer option is A. 14.
Explanation:
Assume x to be the number of days.
On the first day, the company begins with 64 orders and gain 18 more orders per day which makes it 18x and we get:
64 + 18x
Moreover 28 crates per day are made, which decreases the number of crates that are needed per day by 28 which makes it -28x, and we get:
64 + 18x - 28x
Combining like terms, we get
64 - 10x
For day 5, we substitute the value of x with 5:
64 - 10(5) = 64 - 50 = 14
Therefore, 14 crates will be on back-order at the beginning of the fifth day.