Find and interpret the given function values and determine an appropriate domain for the function.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter4: Linear Functions
Section: Chapter Questions
Problem 1PT: Determine whether the following algebraic equationcan be written as a linear function. 2x+3y=7
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A college has a financial aid formula that applies to applicants whose family's income is below a certain threshold. The financial aid can be determined by the function f(x)=10000+2000x,f(x)=10000+2000x, where xx is the number of siblings (including half siblings and step siblings) that the applicant has living in their household. Find and interpret the given function values and determine an appropriate domain for the function.

 

f(-3)=f(−3)= 11000, meaning a qualifying applicant with 2 siblings in their household would get $11000 in finaincial aid. This interpretation  makes sensedoes NOT make sense in the context of the problem.
 
f(2)=f(2)= 23000, meaning a qualifying applicant with 4 siblings in their household would get $23000 in finaincial aid. This interpretation  makes sensedoes NOT make sense in the context of the problem.
 
f(1.5)=f(1.5)= , meaning a qualifying applicant with  siblings in their household would get $ in finaincial aid. This interpretation  makes sensedoes NOT make sense in the context of the problem.
 
Based on the observations above, it is clear that an appropriate domain for the function is  all real numbersnon-negative real numbersreal numbers in a≤x≤bintegerswhole numbers (0, 1, 2, ...)positive integers (1, 2, 3, ...)integers in a≤x≤b.
 
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