1.  In 1994, the number of weekly bus passes sold by City Transit was 98,481 and had been growing at a rate of approximately 3.8% per year. How many passes were likely sold in 1997? In 1985?

2. Homework: p.376-378: 8, 17-22, 38

3. Ahmed invests $400 into a back account that pays 3.5% interest annually. How long will it take Ahmed’s account to accumulate $500?

4. An investment of $2000 earns 5.75% interest, which is compounded quarterly. After approximately how many years will the investment be worth $3000?

5. An investment of $100 is now valued at $149.18. The investment rate is 8% compounded continuously. About how long has the money been invested?

6. An investment of $200 is now valued at $315. Assuming continuous compounding has occurred for 6 years, approximately what interest rate is needed to be for this to be possible?

7. 1.) Write a function that models 400 mg of a substance that has a half life of 84 days. 2.) How much of the substance will be left after 110 days?

8. An investment service guaranteed to double your money in 15 years. Assuming continuous compounding of interest, what rate of interest is needed?

9. 1.) An element has a half life of 30 hours. Write an exponential function for a 100 mg sample. How much is left after 100 hours? 2) When will there by 15 mg left?

11.  In the movie The Lord of the Rings: The Two Towers, action sequences reached levels of 10 9.5 I 0. Find the decibel rating of these sequences and compare it with the average rating of 80dB for a ringing telephone. (Note that 80dB = 10 8.0 I 0 )

12. Solve each equation. Give the answers as calculator ready and rounded to the nearest hundredth. 1.) 4 x = 192.) 8 + 10 x = 1008 3.) 12 y-2 = 204.) 1.5 x = 356 5.) Once the population of Howard High School exceeds 2000 students the school will reconsider building a new high school in the area. Currently Howard High School has 1750 student and the population is growing 4% per year. How many years will it take for the school board to consider building a new school?