Answer:
B
Step-by-step explanation:
the more people who would've surveyed then the graph would be at the same rate.
(0.300 kW) * (24 h/day) * (30 day) * ($0.07/kWh) = $15.12
2x+9+8x+1=180
2x+8x+9+1=180
10x+10=180
10x=170
X=17
It's the same because it's used the commutative property where:
a+b = b+a
So, 86+68+38=192 it's the same sum as 68+38+86=192