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EastWind [94]
3 years ago
11

HELP. LOOK AT THE PICTURE

Mathematics
1 answer:
Lena [83]3 years ago
7 0

Answer:

B

Step-by-step explanation:

Since the person used >200 kWh that month, you would use the bottom equation: 0.15(x-200)+20.

(BTW, the x>200 or x≤200 means if they used more or less than/equal to 200 hours)

From there, you can plug in the number of hours for x, which is 400. So, 0.15([400]-200)+20

0.15(200)+20

30+20

50

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