In Haiti, the price for five (5) flat rolls is 5 gourdes, around 12 cent. How much would we have to pay for 20 rolls?

$2.40

Step-by-step explanation:

You would multiply 12 by 20 which would give you $2.40.

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.