Business precalc

Obtain an exponential function in the form f(t) = Aert. HINT [See Example 5.] f(t) is the value after t years of a $7,000 investment depreciating continuously at an annual rate of 6.6%. f ( t ) = X Need Help? Read It Watch It Talk to a Tutor [0/8.33 Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 2.2.075. 1/50 Submissions Used Y NOTES A country's population was 188 million in 1960 and 301 million in 2010. (a) Use these data to give an exponential growth model showing the country's population P as a function of time t in years since 1960. Round numerical values to six significant digits. HINT [See Example 2.] P (t ) = (b) By experimenting, determine the smallest number of significant digits to which you should round the coefficients in part (a) to obtain the correct 2010 population figure accurate to three significant digits. x significant digits (c) Using the model in part (a), predict the population in 2022. (Round your answer to the nearest million people.) x million people Need Help? Read It Talk to a Tutor