Answer:
The Miller's average electricity bill was $133.64
Step-by-step explanation:
Average = sum of scores/ no. of scores
The sum of scores is the total amount spent on electricity during July, August and September so 121.47+153.56+125.88=400.91
The no. of scores is how many numbers there are, there are 3 scores: July, August and September
=400.91/3
=133.64 (rounded to 2 decimal places)
