Aphone company offers two monthly charge plans. in plan a, the customer pays a monthly fee of 25 and then an additional 6 cents per minute of use. in plan b, the customer pays a monthly fee of 30 and then an additional 5 cents per minute of use. use m for the number of minutes of phone use, and solve your inequality form?

20%

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.