To prepare for a marathon run, sue ran 27 miles before she blistered her hell and then she walked 1 additional mile. her running speed was 18 times as fast as her walking speed. she was running and walking for 5 hours

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im not sure

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.