Saul reads every week. In his first week of reading, he read 50 pages. Each week after that, he read 65 pages. Which expression represents the total number of pages Saul has read, where w represents the number of weeks since he first started reading. 65w+1565 w plus 15 50+65w50 plus 65 w 65w−1565 w minus 15 50+65+w