9. [-/5 Points] DETAILS LCALCCON5 3.1.031. The number of Americans age 65 or older can be modeled as n(x) = -0.00082x3 + 0.059x2 + 0.183x + 34.42 where output is measured in million people and x is the number of years since 2000, projections through 2050.t (a) What is the projected number of Americans 65 years of age and older in 2015? in 2040? (Round your answers to three decimal places.) 2015 million people 2040 million people (b) What is the rate of change of the projected number in 2015? in 2040? (Round your answers to three decimal places.) 2015 million people per year 2040 million people per year (c) Calculate the percentage rate of change in the projected number in 2040. (Round your answer to two decimal places.) % per year Need Help? Read It