Answer:
Step-by-step explanation:
From the problem statement, each box of candles has the following range of candles:
[tex]78 \leq x \leq 82[/tex]
We also know that we have 50 boxes of candles, so we multiply the above range by 50 to get the range of candles:
[tex]3900 \leq x \leq 4100[/tex]
Finally, each candle costs $2, so we have the final range of cost:
[tex]7800 \leq x \leq 8200[/tex]