Final answer:
John's budget constraint for purchasing hotdogs and fries on a $15 budget is expressed as $15 = Qhotdog × $2 + Qfries × $1, representing the tradeoff between the quantities of hotdogs and fries he can buy.
Step-by-step explanation:
The correct budget constraint for John's spending on hotdogs and fries, given that hotdogs cost $2 and fries cost $1, is represented by the equation $15 = Qhotdog × $2 + Qfries × $1. Here, Qhotdog is the quantity of hotdogs he can purchase and Qfries is the quantity of fries. This equation shows the maximum combinations of hotdogs and fries John can buy without exceeding his budget of $15.
Using the information provided as a reference, if we compare this situation with Alphonso's tradeoff between burgers and bus tickets, we can utilize a similar approach. If Alphonso desires one more burger, economically speaking, he would need to sacrifice the number of bus tickets he could have bought instead. Given that one bus ticket is 50 cents, to get an additional burger that costs $2, he must forgo four bus tickets. Therefore, the cost of one more burger in terms of bus tickets is four tickets.