Writing Exponential Equations from Story Problems

The video tutorial explains how to model story problems using linear, quadratic, or exponential equations, focusing on writing exponential equations. It covers defining variables, understanding the general form of exponential equations, and finding the common ratio. An example of bacteria growth is used to illustrate these concepts, showing how to define variables and calculate the initial value and common ratio to form the equation.

What is the first step in setting up an exponential equation from a story problem?

• Define the variables

• Calculate the initial value

• Identify the common ratio

• Solve for X

In the general form of an exponential equation, what does the variable 'a' represent?

• The initial value

• The exponent

• The dependent variable

• The common ratio

How do you correctly find the common ratio 'B' in an exponential equation?

• Divide each Y value by its preceding Y value

• Subtract each Y value from the previous Y value

• Divide each Y value by the following Y value

• Multiply each Y value by the previous Y value

In the bacteria growth example, what is the initial value 'a'?

• 5

• 20

• 2

• 10

What is the common ratio 'B' in the bacteria growth example?

• 10

• 5

• 2

• 1