Questions in the description need answer asap for $5

Sep 15th, 2015
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Question description

Writing in Math Use the information on page 90 to explain how step function's apply to 
postage rates. Explain why a step function is the best model for this situation while your gas 
mileage as a function of time as you drive to the post office cannot be modeled with a step 
function. Then graph the function that represents the cost of a first­class letter. 

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School: UIUC

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