To write: The exponential function that model the population in sample A.
  
Given information:
  
Calculation:
Let the exponential function be
Put
  
Thus, the function is
To write: The exponential function that model the population in sample B.
  
Given information:
  
Calculation:
Let the exponential function be
Put
  
Thus, the function is
To write: The inequality of model A and model B when Sample B overtaking the sample A.
  
Given information:
  
Calculation:
The mode for sample B is
The model for sample A is
Sample of B is overtaking sample of A.
  
Thus, the inequality is
To solve: The inequality
More than
Given information:
  
Calculation:
Draw the graph of inequality is
  
Notice the graph, after 2 hours the Sample B overtook the sample oA.
Chapter 7 Solutions
High School Math 2015 Common Core Algebra 2 Student Edition Grades 10/11
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