In the first slide, we write def which means to define a function so we are defining a function called hotel_cost(nights) and then we add a return statement (140 * nights). Going on to the next slide, we add if statements, else statement and also return statement. There is also a def statement and it has the plane_ride_cost() and in the parentheses is city. Within different if and else statements contains a place and the return statements contains the value which would be the prices for the variable city. We would do the same string, but instead of plane_ride_cost() it will be rental_car_cost() and within it will be day. and under it would be the cost = days * 40.
