There were 2 buses namely A and B. 2 passenger slid up the bus A.
3 passenger slid up the bus B.
1 passenger slid up the bus A again.
1 passenger slid down the bus B.
How many people are there right now in both the busses?

sorry i need the points

step-by-step explanation:

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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.