You are considering renting a city apartment with 1,000 square feet for $1 comma 300 per month. The monthly rent on a larger, 1,500-square-foot city apartment is $1 comma 850. The marginal cost of renting an apartment with 500 additional square feet is?

$1.10 per square foot per month

Explanation:

the marginal cost of renting an apartment with 500 additional square feet = $1,850 - $1,300 = $550 or $1.10 per square foot per month.

The marginal cost of anything is the cost of purchasing (or leasing or producing) one extra unit of output or product.  This is why the answer must be expressed in the cost of an extra unit, not 500 extra units.

def func1(x):

   return (x-32)*(5/9)

def func2(x):

   return (x/2.237)

def main():

   x = ""

   while x != "x":

       choice = input("Enter 1 to convert Fahrenheit temperature to Celsius\n"

                      "Enter 2 to convert speed from miles per hour to meters per second: ")

       if choice == "1":

           temp = input("please enter temperature in farenheit: ")

           print(func1(float(temp))," degrees celcius.")

       elif choice == "2":

           speed = input("please enter speed in miles per hour: ")

           print(func2(float(speed))," meters per second")

       else:

           print("error... enter value again...")

       x = input("enter x to exit, y to continue")

if __name__ == "__main__":

    main()

Explanation:

two function are defines func1 for converting temperature from ferenheit to celcius and func2 to convert speed from miles per hour to meters per second.