Franky's trail mix gives customers the information in the table below. Use the pattern in the table to answer the question. c. Write an equation to represent the number of Calories in any number of grams of trail mix.

d. Write an equation to represent the number of grams of trail mix that will provide any given number of calories.

Rate Table:
Grams of Trail Mix - Calories
50 grams - 150 calories
150 grams - 450 calories
300 grams - 900 calories
500 grams - 1,500 calories