Question

Andy started reading a 250 page book. He can read 20 pages each day. What expression represents how many pages he will have left after x days?

Answer 1

The expression representing the number of pages Andy will have left after x days is 250 - 20x, accounting for the 20 pages he reads each day.

Step-by-step explanation:

The expression that represents how many pages Andy will have left after x days is 250 - 20x. To find this, we start with the total number of pages in the book, which is 250. Andy can read 20 pages each day, so after one day, he will have read 20 pages, leaving 250 - 20 = 230 pages. Continuing this pattern, after x days, Andy will have read 20x pages in total. Thus, the number of pages left is the original number of pages minus the number of pages read over x days, which is calculated as 250 - 20x.