Final answer:
The correct equation to represent x days of buying lunch for Gus, who has a $110 monthly food budget and spends $8 per day, is $110 = 8x.
Step-by-step explanation:
The question asks us to write an equation to represent x days of buying lunch for Gus, given a monthly budget and a daily expense. Gus has a lunch food budget of $110 per month and spends an average of $8 per day on lunch. To find the number of days he can buy lunch with his budget, we would set up the equation as follows:
$110 = 8x
This equation means that if you multiply the number of days, x, that Gus buys lunch by $8, you would get his total monthly lunch budget, which is $110.