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goldenfox [79]
3 years ago
9

A power company calculates a person's monthly bill from the number of

Mathematics
1 answer:
jenyasd209 [6]3 years ago
5 0

Answer: (b)

Step-by-step explanation:

Given

Function for bill calculation is

\Rightarrow b(x)=\left \{ {{0.15x\quad \quad \quad \, \ \ \ \  x200}} \right.

The consumption is 700 kWh i.e. more than 200

Therefore, bill is given by the second function i.e. 0.10(x-200)+30

Substitute 700 for x to get the bill

\Rightarrow 0.1(700-200)+30\\\Rightarrow 50+30=\$80

Hence, option (b) is correct.

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