What is the domain of the function represented by the graph

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

Tyler reads 2/5 of a book on monday, 1/3 of it on tuesday, 2/9 of it on wednesday, and 3/4 of the remainder on thursday. if he still has 14 pages left to read on friday, how many pages are there in the book?