The cost to rent a boat is $10. There is also charge of $2 for each person. Which expresion represen

The cost to rent a boat is $10. There is also charge of $2 for each person. Which expresion represents the total cost to rent a boat for p persons?

The cost function includes a fixed cost of $10 plus a variable cost of 2 persons for p persons:
C(p) = 2p + 10