How do I find the missing number in the 3rd box?

If f(x)= 3x+6 which of the following is the inverse of f(x)

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

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?