Respuesta :
Answer:
The correct option is;
C. $0.19 per KWH
Step-by-step explanation:
The given data are;
KWH [tex]{}[/tex] Billing
578 [tex]{}[/tex] $109.82
1,033 [tex]{}[/tex] $196.27
1,475 [tex]{}[/tex] $280.25
1,754 [tex]{}[/tex] $333.26
Therefore, we have the rate of change, m, given as follows;
m =(Change in the amount paid)/(Change in the electric usage in the same period)
For the first and second month, the rate of change is therefore;
m = ($196.27 - $109.82)/(1,033 - 578) = $0.19 per kWH
Between the first and third month, the rate of change is given as follows;
m = ($280.25 - $109.82)/(1,475 - 578) = $0.19 per kWH
Between the first and fourth month, the rate of change is given as follows;
m = ($333.26 - $109.82)/(1,754 - 578) = $0.19 per kWH
Therefore;
The rate of change is constant and is $0.19 per kWH
