Writing Exponential Equations From a Table

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Presentation transcript:

Writing Exponential Equations From a Table http://www.youtube.com/watch?v=eqPqx5yrFsg

From 2 Points http://www.youtube.com/watch?v=KVEPO2gn2R8

From a Word Problem http://www.youtube.com/watch?v=b8Bn2fpeU2o

Practice Word Problems Suppose that you are observing the behavior of cell duplication in a lab. In one experiment, you start with one cell and the cell population is tripling every minute. Write an equation. x y

Practice Word Problems Suppose that you are observing the behavior of cell duplication in a lab. In one experiment, you started with 100,000 cell and observed that the cell population decreased by half every minute. Write an equation. x y

Depreciation: Matt bought a new car at a cost of $25,000 Depreciation: Matt bought a new car at a cost of $25,000. The car depreciates approximately 15% of its value each year. a.) What is the decay factor for the value of this car? The decay factor is 1 - 0.15 = 0.85. (Remember that the decay factor is 0 < b < 1.) b.) Write an equation to model the decay value of this car where y is the value of the car; x is the number of years since new purchase c.) What will the car be worth in 10 years? Answer: $4,921.86