Consider the rule y=22+.10x where x represents the number pencils purchased and y represents the total cost. Write a sentence or two to describe what kind of numbers are "allowable" input values. *

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Consider the rule y=22+.10x where x represents the number pencils purchased and y represents the total cost. Write a sentence or two to describe what kind of numbers are "allowable" input values. *
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Step 1

Given : y=22+.10x , where x represents the number of pencils purchased 

So, x cannot be negative

x0

Also, x can only be natural numbers since it cannot be negative and rational

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