Dimtry bought a pair of pants at the discounted price of $30. the original price of the pants was $40. what was the percent of the discount? explain to me how you got your answer

a right triangle. and in the future use this desmos.com to you

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.