Fill in the blanks. Then, choose the property of addition you used. _ + 3 = 3 + 7 is it: associated property, commutative property, or identity property?

0 + _ = 5 is it: associated property, commutative property, or identity property?

2 + (6 + 8) =(2 + 6)+ _ is it: associated property, commutative property, or identity property?

can someone please help me?

_7 + 3 = 3 + 7 : commutative property,[if something is added or subtracted]

0 +5 _ = 5 is it: identity property.[if 0 is added or subtracted]

2 + (6 + 8) =(2 + 6)+ _8 associated property

[if added or multiplied]

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)