The monthly cost of electricity in Smithville is determined by the function
C(e) = $0.16e + $24.54,
where e is the amount of electricity used in kilowatt-hours (kWh) and C(e) is the total cost. If the Fox family used 872 kWh of electricity last month, how much was their bill?
A. $164.06
B. $148.06
C. $172.06
D. $139.52
I think C, but I'm not sure
872(.16) + 24.54
= 164.06
Just do it.
.16 ( 872 ) + 24.54
= 139.52 + 24.54
= 164.06
Thanks! :)
You are welcome.
To find the bill for the Fox family, we need to substitute the amount of electricity they used (872 kWh) into the function C(e) and calculate the total cost.
Given: C(e) = $0.16e + $24.54
Substituting the value of e = 872 into the function:
C(872) = $0.16 * 872 + $24.54
= $139.52 + $24.54
= $164.06
Therefore, the bill for the Fox family is $164.06.
So, you were correct in thinking that the answer is C.