Question

define variables for the problem situation. the amount owed on a monthly electricity bill depends on how many kilowatt - hours of electricity were used during that month. m = number of months and k = kilowatt - hours used d = amount owed in dollars and k = kilowatt - hours used d = amount owed in dollars and m = number of months d = amount owed in dollars and c = cost of a kilowatt - hour m = number of months and c = cost of a kilowatt - hour

Explanation:

The amount owed on a monthly electricity bill is a dollar - value quantity, so it makes sense to represent it with $d$. The number of kilowatt - hours used affects the amount owed, and is a common variable to consider in electricity - bill problems, represented by $K$. The number of months is not directly related to the amount owed based on the given description which focuses on a single month's bill depending on kilowatt - hours used. The cost of a kilowatt - hour is not what the amount owed directly depends on in the context of the problem statement which is about the relationship between amount owed and kilowatt - hours used.

Answer:

B. $d =$ amount owed in dollars and $K =$ kilowatt - hours used