Problem
Writing and evaluating a function that models a real-world situation: Basic An amusement park charges an admission fee of 20 dollars for each person. Let $C$ be the cost (in dollars) of admission for $P$ people. Write an equation relating $C$ to $P$. Then use this equation to find the cost of admission for 11 people. Equation: Cost for 11 people: dollars
Solution
Step 1 ：Let's denote the cost of admission for $P$ people as $C$. Since the amusement park charges an admission fee of 20 dollars for each person, we can write the equation as $C = 20P$.
Step 2 ：Substitute $P = 11$ into the equation to find the cost for 11 people.
Step 3 ：\(C = 20 \times 11\)
Step 4 ：\(C = 220\)
Step 5 ：Final Answer: The cost for 11 people is \(\boxed{220}\) dollars.
