Answer:
The shop can cut the cost of production per sandwich to $3.75. The revenue function would then be defined as R(x)=9x.
Step-by-step explanation:
We want to make as big profit as possible by making as little sandwiches as possible. This means that we want the profit, which is [tex]revenue- production\: cost[/tex] to be as big as possible.
For the first choice the profit per sandwich is [tex]8.25-4=4.25[/tex] dollars.
For the second choice the profit per sandwich is [tex]9-3.75=5.25[/tex] dollars.
For the third choice the profit per sandwich is [tex]8.5-3.5=5[/tex] dollars.
We see here that for the second choice the profit is greatest, therefore this choice is most suitably correct.
