3. Warm up Get out a piece of paper. Fold it in half. This divides the paper into two regions, each of which has half the area of the paper.
4. Warm up Get out a piece of paper. Fold it in half. This divides the paper into two regions, each of which has half the area of the paper. Fold it in half again. How many regions does the page have now? What fraction of the original area does each region have?
5. Warm up Get out a piece of paper. Fold it in half. This divides the paper into two regions, each of which has half the area of the paper. Fold it in half again. How many regions does the page have now? What fraction of the original area does each region have? Fill in the chart on your notes, folding the paper until you can’t anymore.
6. Exponential Decay An exponential decay function has the form y = abx, when b is a number between 0 and 1.
