A company's annual net profit can be modeled by the polynomial function P(x) = - 73x + 392x - 234x + 1860, where P(x) is net profit in millions of dollars and x is the number of years since 2008. The company's annual revenue can be modeled by the function R(X) 450x - 487x+ 8551, where R(x) is revenue in millions of dollars and x is years since 2008. net profit a. Given that net profit margin write a function, m(x), that models the company's net profit margin. revenue b. Use part (a) to predict the company's profit margin in 2016. a. m(x) = (Do not simplity.)

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