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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.6: Solving Quadratic Equations By Using The Quadratic Formula
Problem 64PFA
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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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