An electric company charges a certain rate per kilowatt-hour (\text{kWh})(kWh)left parenthesis, start text, k, W, h, end text, right parenthesis of electricity used and an administrative fee of \$3.50$3.50dollar sign, 3, point, 50. The company charged Zhao \$63.25$63.25dollar sign, 63, point, 25 for using 800\,\text{kWh}800kWh800, start text, k, W, h, end text of electricity. Zhao uses the equation, 63.25=800r+3.5063.25=800r+3.5063, point, 25, equals, 800, r, plus, 3, point, 50 to represent the situation.
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800r + 3.50 = 63.25 , rate per kilowatt-hour = 0.075 $ per kwh
Step-by-step explanation:
63.25=800r+3.50
administrative fee of $3.50
$63.25 charged for using 800 kwh
r $ = Rate per kwh
Rate per kwh = r $
for 800 kwh = 800r $
administrative fee = $3.50
Total charges = 800r + 3.50 $
Total charged = $63.25
800r + 3.50 = 63.25
=> 800r = 59.75
=> r = 0.075 $ per kwh
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19
Answer:
The charge per kilowatt-hour
Step-by-step explanation:
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