Let C be the cost (in dollars) of admission for P people since the amusement park charges an admission fee of $40 dollars per person, we can set the following equation:
![C=40* P\text{.}](https://img.qammunity.org/2023/formulas/mathematics/college/ydlbnn5mzforw053gkzsdk5rgyuh98ustt.png)
Then, evaluating the above equation at P=15 we get:
![\begin{gathered} C=40*15 \\ =600. \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/8s2vi9daisrzm26wgno21pts7ikvxtvxe3.png)
Therefore, the cost for 15 people is 600 dollars.
Answer: Equation: