Please help ASAP!!
Show all work to find f(g(x)) and explain what f(g(x)) represents

Enter the missing numbers in the boxes to complete the table of equivalent ratios of lengths to widths. ? 18 8 ? 10 30 12 ?

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

Asquare parking lot has 6,400 square meters what is the length in meters