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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

1. Adding and Subtracting Polynomials

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Exercise 57 Page 491

What is the general form of an exponential function? What does each of the values represent?

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Practice makes perfect

We want to identify the initial amount a and the growth factor b in the given exponential function. To do so, let's first recall the general form of an exponential growth function.

y= a * b^x, where a>0 and b>1 Here, a is the initial amount and the base b is the growth factor, which equals 1 plus the percent rate of change expressed as a decimal. Let's now consider the given function. y= 3 * 4^x We see that a= 3 and b= 4. Therefore, the growth factor is 4.

Subchapter links

Lesson Check p.489

Practice and Problem-Solving Exercises p.489-491

Standardized Test Prep p.491

Mixed Review p.491