Bell Ringer April 27th

1. The growth of bacteria in a pond is shown in the table.

Which graph shows a rate of change that is similar to the rate of change of the bacteria?

2. Which graph is the shape of a normal curve?

3. Based on the trend, predict the number of hybrid cars sold if the price of gas is $4.00 a gallon.

4. When Katie was born her mother invested $5000 in an account for her college savings. We can use the formula V = 5000(1 + r)^t where r represents the interest rate and t represents the time in years. If Katie has approximately $11,042 in her account after 18 years, what was the interest rate for the account?