Interpreting the Numbers in a Model Worksheet with Answer Key

What's on the worksheet

1. Rewrite each model as a linear or exponential form and say what its numbers mean.
   y = 12 - 0.4xy = 5(2)^{x + 2}y = 3(x + 5)y = \dfrac{120}{1.25^x}y = 9(3)^{x - 1}
2. Decide whether each sentence about the delivery van's value is correct.
3. Lake light model: interpret the numbers and use the model at different depths.
4. Shoe size model: say what the 3 and the 22 mean and what values make sense.
5. Heat pump homes: interpret the starting value and the yearly growth.
6. Yeast culture: say what 500, 3 and 2 mean in the model.
7. Three students model the number of deer in a reserve: compare their models.