Answer: To find out how many pages Michelle will have written after 18 days, we can calculate the total number of pages she will write in 18 days by multiplying the number of pages she writes per day (3) by the number of days (18). So, Michelle will write 3 pages per day for 18 days: 3 pages/day * 18 days = 54 pages Therefore, after 18 days, Michelle will have written a total of 54 pages for her book.