Answer:
The bill is $30
Step-by-step explanation:
Given

See attachment
Required
Determine the bill when KWh = 400
From the given piece-wise function.
We make use of:

Because 
Substitute 400 for x in b(x)



The bill is $30
Answer:
Answer is D
Step-by-step explanation:
I kinda understand it but it need to be neat so yh next time you have aa problem like this just write it neat for people to understand cleary what is your question.
Answer:
50%
Step-by-step explanation:
400/800 is the fraction of the t-shirts that are size small
simplify to get 1/2
1/2 is 50%
Answer:
6
Step-by-step explanation:
4+2 = 6
Hope this helps
Answer:
More.
Step-by-step explanation:
We need to see the equations to pick from to help you.