Explanation Given: The number of people N (measured in thousands) who participate in boating can be described by the function: N ( x ) = 1.99 x 2 − 6.76 x + 1098.4 where x is the mean income (measured in thousands) and x ≥ 10 . Calculation: Consider the provided inequality, N ( x ) = 1.99 x 2 − 6.76 x + 1098.4 To find N ( 10 ) , substitute x = 10 in N ( x ) . N ( 10 ) = 1.99 ( 10 ) 2 − 6.76 ( 10 ) + 1098.4 = 199 − 67.6 + 1098.4 = 1229.8 To find N ( 30 ) , substitute x = 30 in N ( x ) . N ( 30 ) = 1.99 ( 30 ) 2 − 6.76 ( 30 ) + 1098.4 = 1791 − 202.8 + 1098.4 = 2686.6 To find N ( 50 ) , substitute x = 50 in N ( x ) . N ( 50 ) = 1.99 ( 50 ) 2 − 6

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ISBN: 9780134178967

Author: John Tobey Jr., Jeffrey Slater, Jamie Blair, Jenny Crawford

Publisher: PEARSON

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Chapter 8.5, Problem 25E

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To calculate: The value of N(10), N(30), N(50), N(70), and N(90) if the function is

N(x)=1.99x2−6.76x+1098.4.

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Chapter 8.5, Problem 24E

Chapter 8.5, Problem 26E

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The value of N ( 10 ) , N ( 30 ) , N ( 50 ) , N ( 70 ) , and N ( 90 ) if the function is N ( x ) = 1.99 x 2 − 6.76 x + 1098.4 .

Solution Summary: The author calculates the number of people N (measured in thousands) who participate in boating by the function N(x)=1.99x 2-6.76x+1098.

Concept explainers

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To calculate: The value of N(10), N(30), N(50), N(70), and N(90) if the function is

N(x)=1.99x2−6.76x+1098.4.

Want to see the full answer?

Chapter 8 Solutions

The value of N ( 10 ) , N ( 30 ) , N ( 50 ) , N ( 70 ) , and N ( 90 ) if the function is N ( x ) = 1.99 x 2 − 6.76 x + 1098.4 .

Solution Summary: The author calculates the number of people N (measured in thousands) who participate in boating by the function N(x)=1.99x 2-6.76x+1098.

Concept explainers

Videos

To calculate: The value of N(10), N(30), N(50), N(70), and N(90) if the function is N(x)=1.99x2−6.76x+1098.4.

Want to see the full answer?

Chapter 8 Solutions

To calculate: The value of N(10), N(30), N(50), N(70), and N(90) if the function is

N(x)=1.99x2−6.76x+1098.4.