Sarah kept track of the total number of books she read. sarah's graph shows that after 1 week she read a total of 2 books. after 2 weeks she had read a total of 4 books.

after which week had sarah read a total of 9 books?

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5