help please

The relation T =190 can be used to determine the length of time, t, in hours, that milk of a certain fat content will remain fresh. T is the storage temperature, in degrees Celsius. a) What is the freshness half-life of milk? b) How long will milk keep fresh at 4* C? 3. Knowledge/Understanding [4 marks] Jasmine is saving to buy a condominium. She invests $1200 at an annual rate of 5.5%. This is expressed by the equation A=1200(1.055)", where A is the value of the investment after n years. a) What is the value of the investment after 5 years? b) What is the value after 10 years? 5. Application [3 marks] raccoon population is growing exponentially. The expected population, noted by wildlife biologists, can be estimated by P =1250(1.013)" where P is the population and n is the number of years. What is the expected population in 5 years