Finite Mathematics & Its Applications (12th Edition)

12th Edition

ISBN: 9780134507125

Author: Goldstein

Publisher: PEARSON

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

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Textbook Question

Chapter 1.1, Problem 44E

Simple Interest If $1000 is deposited at 3% simple interest, the balance y after x years will be given by the equation y = 30 x + 1000 .

a. Draw the graph of this linear equation.

b. Find the balance after two years.

c. When will the balance reach $1180?

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Chapter 1.1, Problem 43E

Chapter 1.1, Problem 45E

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Chapter 1 Solutions

Finite Mathematics & Its Applications (12th Edition)

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Simple Interest If $1000 is deposited at 3% simple interest, the balance y after x years will be given by the equation y = 30 x + 1000 . a. Draw the graph of this linear equation. b. Find the balance after two years. c. When will the balance reach $1180?

Solution Summary: The author analyzes the linear equation, y=30x+1000, and calculates a balance after 2 years.

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