### Home > CC4 > Chapter 2 > Lesson 2.3.3 > Problem 2-112

2-112.

Sally ordered her groceries online. She accidentally ordered 120 pounds of flour (instead of 10 pounds) and only uses five pounds of flour every two months. Homework Help ✎

What is the unit rate of change for this situation, including the units?

How many pounds is Sally going to use each month?

Remember that she is reducing the amount of flour she has so the slope will be negative.Write an equation that represents this situation.

The

*y*-intercept is the starting weight. Use this and the slope you found above to write an equation in*y = mx + b*form.