Use doubles minus one to solve 8 + 7

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

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

Name the most appropriate metric unit for each measurement