Question 1207854: Florida Power & Light Company supplies electricity to residential customers for a monthly customer charge of $5.69 plus 8.48 cents per kilowatt-hour for up to 1000 kilowatt-hours.
(a) Write a linear equation that relates the monthly charge C,in dollars, to the number x of kilowatt-hours used in a month, 0 <= x <= 1000.
(b) Graph the equation.
Answer by ikleyn(52777)   (Show Source):
You can put this solution on YOUR website! .
The equation is
C = 0.0848*x + 5.69 dollars, x in kilowatt-hours, 0 <= x <= 1000. ANSWER
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.
Thus (a) is solved and explained.
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Regarding (b), 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 (faster than you blink your eye).
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