Where is 9/2 on the number line

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year