Final answer:
The cost of buying x t-shirts can be represented by the equation: y = 5x + 80. In this equation, y represents the cost of buying the t-shirts and x represents the number of t-shirts purchased. The starting fee of $80 is added to the cost of each shirt, which is $5.
Step-by-step explanation:
The cost of buying x t-shirts can be represented by the equation: y = 5x + 80.
In this equation, y represents the cost of buying the t-shirts and x represents the number of t-shirts purchased.
The starting fee of $80 is added to the cost of each shirt, which is $5.
For example, if you want to determine the cost of buying 10 t-shirts, you can substitute x = 10 into the equation: y = 5(10) + 80 = 50 + 80 = 130. Therefore, the cost of buying 10 t-shirts would be $130.