Step-by-step explanation: Because the formula for area is length times width, the expression used to find it would by w•l. If L=4+W, the equation for area in this question is w(4+w)=12
The number of units produced by the worker during t hours of work can be modelled by the following function:
To find the number of units produced during first 3 hours, we can substitute 3 for t. This will give us the number of units produced by the worker during first 3 hours.
Thus the worker will produce 67 units during the first 3 hours of the work.