Eric plans to rent a Beach House for a week. He has a coupon for 20% off the daily base rate of $200. He will also have to pay an additional $20 a day for utilities. Which expression represents the situation. (d represents the number of days)

The daily rate after 20% discount is $200*80% = 200*0.8 = $160

The additional daily fee is $20 per day

Let the number of days be 'd'

The equation to represent the total cost, C, after d days is

C = 20 + 160d

Note: The optional answers is not given by the original post so the total cost, C, might be represented by a different variable (i. e. 'y')