Hello, could someone kindly assist me in providing detailed answers to these questions? Please be sure to include all necessary steps and to demonstrate all of your calculations. Please don't waste my time or money if you can't help me. I already reported someone for answering my question incorrectly. If you can't help, please let someone else. I'm grateful.

MCR3UE - Unit 4 Working with Exponential Functions ASSIGNMENT # 4 Be sure to include steps and show your work with all of your calculations. /20 marks Communication marks - 2 marks 1. A chemical reaction in Mrs. Patterson's lab filled the room with a dangerous gas. The amount of the gas remaining in the room is modelled by the equation A = 400(0.85)", where A is the amount of gas remaining in ppm (part per million) after n minutes. [ 4 marks] a. What is the value of decay factor? b. What is the value of decay rate? c. How much gas remains after one hour (rounded to 3 decimal places)? 2. The value of a car used in a business can be depreciated at a rate of 30% each year. A car has an Initial value of $30,200.00. [4 marks] a. Write an exponentall equation to represent the situation b. Determine the value of the car after 2 years.3. Vanadium-48 has a half-life of 16 days. How long will it take for a sample of the substance to reduce to 25% of its original amount? [ 3 marks] MCR3UE - Unit 4 Working with Exponential Functions ASSIGNMENT # 4 4. In 1995, Australia's population change was modelled by the equation P = 18072000(1.012)" a. What was Australia's population in 1995? b. What was Australia's population annual percentage growth rate in 1995? C. Predict Australia's population in 2014. [3 marks]5. $4000 in a mutual fund earns 12% every year. How much will the fund be worth in 20 years? [ 2 marks] 6. The half-life of a radioactive material is about 2 years. How much of a 5.0 kg sample of this material will remain after: a) 4 years b) 18 months? [ 4 marks]