Answer:
The table is shown in the attachment
Explanation:
You have to write in the first column all the 12 months of the year, in this case we don't know in which month it started so we can write the months from 1 to 12.
Then the second column will be the charge to set up an account and this will only be the first month so write $50 in the second column on the 1 month's row.
The third column will be the monthly fee so write $18 in all the months.
And the last column will be the total of each month, so you will add the rows of each month all the months will be $18 except the total of the first month, that will be $50+$18 = $68