WHAT IS THE ANSWER TO 3.5Z-2.7Z=-6

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

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2