Question

The percent of undergraduate college students who have credit cards each year from 2000 through 2006 can be approximately modeled by the polynomial $-1.2 x^{2}+4 x+80$ where $x$ is the number of years since 2000. Find the percent of college students who had credit cards in 2006

Name: Problem 78, Chapter 6: Beginning and Intermediate Algebra
Uploaded: 2020-03-17T18:37:11-08:00
Duration: 1 min 26 s
Channel: Angela Guo
Description: The percent of undergraduate college students who have credit cards each year from 2000 through 2006 can be approximately modeled by the polynomial -1.2 x^2+4 x+80 where x is the number of years since 2000. Find the percent of college students who had credit cards in 2006

   The percent of undergraduate college students who have credit cards each year from 2000 through 2006 can be approximately modeled by the polynomial $-1.2 x^{2}+4 x+80$ where $x$ is the number of years since 2000.

Find the percent of college students who had credit cards in 2006

Beginning and Intermediate Algebra

Elayn Martin-Gay 4th Edition

Chapter 6, Problem 78

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Solved by Expert Angela Guo

03/17/2020

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2 x^{2}+4 x+80$ where $x$ is the number of years since 2000. Show more…

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The percent of undergraduate college students who have credit cards each year from 2000 through 2006 can be approximately modeled by the polynomial $-1.2 x^{2}+4 x+80$ where $x$ is the number of years since 2000. Find the percent of college students who had credit cards in 2006

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Key Concepts

Polynomial Functions

A polynomial function is an expression that is made up of variables and coefficients, involving only the sum, difference, and multiplication of these elements. The variables in a polynomial are raised to non-negative integer powers. Polynomial functions are used in many mathematical models to represent real-world phenomena.

Function Evaluation

Function evaluation involves substituting a specific value for the variable in a function to calculate the corresponding output. This process is critical to determine how the function behaves for particular inputs, allowing us to interpret the results in a practical context.

Variable Substitution

Variable substitution is the process of replacing a variable with a specific value within an expression or function. This method is essential for solving equations and evaluating functions, as it allows us to find the outcome corresponding to a given input.

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