MA.912.AR.5.5
Given an expression or equation representing an exponential function, reveal the constant percent rate of change per unit interval using the properties of exponents. Interpret the constant percent rate of change in terms of a real-world context.
Example Problems
Amira's monthly rent is dollars.
Her landlord raises it by 10%.
Write two equivalent expressions that could represent her new monthly rent.
Her landlord raises it by 10%.
Write two equivalent expressions that could represent her new monthly rent.
Arjun's utility bill goes up by 12%.
If the previous bill was dollars, write two equivalent expressions that could represent the new bill amount.
If the previous bill was dollars, write two equivalent expressions that could represent the new bill amount.
The brightness of a distant supernova decreases with time t (in hours) according to
By what factor is the brightness multiplied each hour?
By what factor is the brightness multiplied each hour?
Khan Academy ResourcesRewrite exponential expressionsEquivalent forms of exponential expressionsInterpret change in exponential models: changing unitsInterpret change in exponential models: with manipulationInterpret change in exponential modelsInterpreting change in exponential modelsInterpreting change in exponential models: changing unitsInterpreting change in exponential models: with manipulationRewriting exponential expressions as A⋅BᵗEquivalent forms of exponential expressions
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