Question

Joy is selling t-shirts to raise money for charity. She orders 100 t-shirts and plans to sell them for $15 each. Describe the domain and range of the

function that models h e r
sales.

Answer 1

The domain of the function that models Joy's sales is the set of all possible numbers of t-shirts that Joy can sell, which is the set of non-negative integers less than or equal to 100. This is because Joy cannot sell a negative number of t-shirts, and she cannot sell more than the 100 t-shirts she has ordered.

The range of the function is the set of all possible amounts of money that Joy can make from selling the t-shirts. This is the set of non-negative real numbers less than or equal to $1500. This is because the maximum amount of money Joy can make is $1500, which is the product of the number of t-shirts (100) and the price per t-shirt ($15).