What is the inverse of the function below? f(x) = x-6
7-1(x) = -x + 6
7-1(x) = x + 6
f-1(x) = x - 6
7-1(x) = -x - 6
Help please!

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?