Który z podanych ciągów jest arytmetyczny? a)an=
b) an =
c) an = +1
d) an= 3n+7/10

For a read-a-thon, jay and odhràn each started reading a book at the same time and continued reading for several hours. jay's book had 278 pages, and he read 55 pages per hour. odhràn's book had 238 pages, and he read 45 pages per hour. after how many hours did they have the same number of pages left, and how many pages were left?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone