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Home / 09 Exponential Functions / 04 Exponential Vs Linear

Example: Write a model for each of the situations described (either linear or exponential). Assume that you begin with 200g of helium:

  1. The helium decreases by 10g per day.
  2. The helium decreases by 10% each day.

Solution

  1. The helium decreases by 10g per day.\[y=200-10x\]
  2. The helium decreases by 10% each day.\[y=200(0.9)^x\]