Concept explainers
a.
Find an exponential model for the population.
a.
Answer to Problem 9E
Explanation of Solution
Given information:
The population of a certain city was
Find an exponential model
Calculation:
Consider the population of a certain city was
Doubling time =
Exponentially growth model,
Initial population size,
Solve for population in
The projected population is
Hence, the solution is,
b.
Find an exponential model for the population.
b.
Answer to Problem 9E
Explanation of Solution
Given information:
The population of a certain city was
Find an exponential model
Calculation:
Consider the population of a certain city was
Doubling time =
Exponentially growth model,
Hence, the solution is,
c.
Find an exponential model for the population.
c.
Answer to Problem 9E
Explanation of Solution
Given information:
The population of a certain city was
Sketch a graph of the population at time
Calculation:
The graph is as shown,
Hence, the solution is a graph.
d.
Find an exponential model for the population.
d.
Answer to Problem 9E
Explanation of Solution
Given information:
The population of a certain city was
Estimate when the population will reach
Calculation:
Consider the population will reach
Put,
Hence, the solution is,
Chapter 4 Solutions
Precalculus: Mathematics for Calculus - 6th Edition
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