For Exercise, the given function values satisfy a function defined by f(x) = ax2 + bx + c. a. Set up a system of equations to solve for a, b, and c. b. Use a graphing utility to find the reduced row-echelon form of the augmented matrix. c. Write a function of the form f(x) = ax2 + bx + c that fits the data. f(-3) = -7.28 f(-1) = 3.68 f(10) = 18.2

Find the set of solutions for the linear system -3x1 6x2 3x3 9. 672 8x3 -8 Use x3, x2, etc. for the free variables if necessary. Indicate if a variable is free by writing the same variable in the space (so if x1 is free, write x1 =x1). 2x2 - x3 - 3 4/3x3 - 4/3 x3 = x3

Social networking and video-sharing sites often include rich media and display advertising placed around user- generated content. Suppose that, for a particular social networking company, the annual revenue R, in millions of dollars, from rich media advertisements for the five years from the beginning of 2015 through the end of 2019 can be approximated by the model $ R(x) = x¹ + 11x³ - 39x² + 45x, where a is the number of years from the beginning of 2015. What was the total revenue for this company in the five-year period? Round to 2 decimal places. million -

Write the non-arbitrary parameters in terms of the arbitrary ones.