Below is a graph of the annual yield, y(t), in bushels per year, from an orchard t years after planting, 400 300 200 100 t 60 10 20 30 40 50 Rough interpretation of the graph: The tree takes about 10 years to get established, but the next approximately 20 years, they give a substantial yield. After about 30 years, however, age and diseases take their toll, and the annual yield falls. 1. Indicate how to find the total yield, labeled F(M), up to M years (0