Which expression is equivalent to -3(2m-1)n?
6m-n-3
6m-n+3
-6m-n-3
-6m-n+3

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

What is the result of the following division?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0