The postal service charges 44 cents for letters that weigh 1 ounce or less and 17 cents more for letters that weigh between 1 and 2 ounces. Jeffery, testing his father's math skills, gave his father $36.90 and asked him to purchase 80 stamps for his stamp collection, some 44-cent stamps and some 61-cent stamps. How many of each type of stamp did he buy?

glide reflection.

its mainly because the pattern will be infinite and will never end. it will look like a gilder or like a filpbook when set to motion.

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.