Question 1207854
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<pre>
The equation is

    C = 0.0848*x + 5.69 dollars, x in kilowatt-hours,  0 <= x <= 1000.    <U>ANSWER</U>


0.0848 is 8.48 cents, converted to dollars.


The formula says that the monthly charge, C, in dollars, increases linearly from the base value of 5.69 dollars
by 0.0848 dollars for each kilowatt-hour, in the range from 0 to 1000 kilowatt-hours.


So, this formula is a literal translation of the wording description to the Math language.
</pre>

Thus (a) &nbsp;is solved and explained.


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Regarding &nbsp;(b), &nbsp;make a plot on your own.


You may use an online free of charge plotting tool at web-site 

www.desmos.com/calculator



Print the equation there in the specialized window and get your plot instantly

in the next second &nbsp;(faster than you blink your eye).