Final answer:
Stacy would spend $52.50 if she bought 15 tickets at the county fair. This is determined by substituting the number of tickets into the total cost equation c = 3.5t. Similar to economic tradeoffs, Stacy's decision reflects a simple application of basic algebra to determine costs.
Step-by-step explanation:
If Stacy bought 15 tickets at the county fair, and the total cost of ride tickets is given by the equation c = 3.5t, where c is the total cost of tickets and t is the number of tickets, we can calculate the total cost for Stacy by substituting the number of tickets she bought into the equation.
To find the cost for Stacy, the calculation would be:
c = 3.5 × 15
c = $52.50
Therefore, if Stacy bought 15 tickets, the total cost would be $52.50.
This situation is analogous to a budget constraint scenario often discussed in economics. For instance, Alphonso's tradeoff between burgers and bus tickets can illustrate the concept of opportunity cost. When Alphonso is at point D, able to afford 12 bus tickets and two burgers, but wants an additional burger, economists would consider the cost of additional burgers in terms of bus tickets foregone, which would be four bus tickets. This reflects the true cost to Alphonso according to economic principles.