It costs $\$ 15$ to operate a lemonade stand, while a cup of lemonade sells for $\$ 0.75$.
Which of the following expresses the profit, $P$, as a function of the number of cups, $c$, of lemonade sold.
A) $ P=0.75 c-15$
B) $ P=0.75 c+15$
C) $ P=15.75 c$
D) $ P=0.75 c$

Question

Quizplus · Accepted Answer

The profit is calculated by subtracting the total cost from the total revenue. The revenue from selling $c$ cups is $0.75c$, and the cost is $15$. Thus, the profit function is $P = 0.75c - 15$.

It Costs $15\$ 15$15 To Operate a Lemonade Stand, While a Cup of Lemonade

It Costs $\$ 15$ To Operate a Lemonade Stand, While a Cup of Lemonade