Question

A factory worker can pack and seal 14 boxes in two hours, 21 boxes in three hours and 28 boxes in four hours. What is the constant rate of change?A. 7 boxed per hourB. 14 boxed per hourC. 21 boxes per hourD. 28 boxes per hour

Answer 1

Given:

The worker can pack

14 boxes = 2 hours

21 boxes = 3 hours

28 boxes = 4 hours

Let's find the constant rate of change:

`\begin{gathered} \frac{14}{2\text{ }}=\text{ 7 boxes per hour} \\ \\ (21)/(3)=\text{ 7 boxes per hour} \\ \\ (28)/(4)=\text{ 7 boxes per hour} \end{gathered}`

Therefore, the constant rate of change is 7 boxes per hour

ANSWER:

A. 7 boxes per hour