Which expression is equivalent to -6+ 4 5 −8.2+ 3 5 ?

You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?

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2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10