To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14). Zack is using which of the following properties?
1.) distributive
2.) inverse
3.) associative
4.) commutative

1. Distributive

Step-by-step explanation:

This is because you multiply the number outside the parentheses into the numbers inside the parentheses.

Hope it helped.

c

step-by-step explanation:

the answer is 150.6

step-by-step explanation:

you multiply .02 by 30 and get .6.

and then you multiply 5.00 by 30 and get 150.

hope this !