The exponential function f takes the value 10 when x=1 and 30 when x=2.  What is the y-intercept of f? Explain how you know. What is an equation defining f?

College Algebra
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ISBN:9781938168383
Author:Jay Abramson
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Chapter6: Exponential And Logarithmic Functions
Section6.1: Exponential Functions
Problem 2SE: Given a formula for an exponential function, is itpossible to determine whether the function grows...
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The exponential function f takes the value 10 when x=1 and 30 when x=2

  1. What is the y-intercept of f? Explain how you know.
  2. What is an equation defining f?
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