Find the missing digit to make 18,59_ divisible by 9.
a. 3
b. 1
c. 6
d. 4

Which expression is equivalent to? assume x > 0 and y > 0.

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

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62