Free GMAT Practice Question

Question 1 of 1
ID: GMAT-PS-3
Section: Quantitative Reasoning - Problem Solving
Topics: Functions; Maximum and Minimum Values
Difficulty level: Challenging

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The number of geysers, $f(t)$, sold by a store in the winter season is modeled by the function $f(t)=-90t+500$, where $t$ represents the average daily temperature in degree centigrade, rounded to the nearest greater integer. If in the winter season the average daily temperature usually varies between $3.44^\circ$C and $-4.71^\circ$C, what is the difference between the maximum and the minimum number of geysers sold by the store?

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