Ali opened a saving account with 500$. After 2 years the total interest he earned was 10$. What was the annual interest rate?

1 percent

Step-by-step explanation:

1 percent of 500 is 5 5 times 2 is 10

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.