it takes the president of the math honor society 410 minutes to contact every member by phone. two weeks later for a different reason the vice president calls every member, taking 340 minnutes had they waited and worked toguether dividing the calls aout how long would it be

1.3 is the answer

Step-by-step explanation:

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.