Final answer:
To prompt the user to enter the amount of sales for the week and assign the input to a variable, you can use the following statement in Python: sales = float(input('Enter the amount of sales for the week: ')).
Step-by-step explanation:
To prompt the user to enter the amount of sales for the week and assign the input to a variable, you can use the following statement in Python:
sales = float(input('Enter the amount of sales for the week: '))
This statement uses the input() function to display the prompt message 'Enter the amount of sales for the week: ' and waits for the user to enter a value. The entered value is then converted to a float and assigned to the sales variable.