Question: Letter grades are assigned using the following scale: 0 through 69 is an F, 70 through 79 is a C, 80 through 89 is a

Letter grades are assigned using the following scale: 0 through 69 is an F, 70 through 79 is a C, 80 through 89 is a B, and 90 through 100 is an A. Which of the fol lowing types of functions best describes the graph of this grading scale? Logistic growth function Sinusoidal function Exponential function Step function
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