Which expressions are polynomials? y, 2 + s x^2-, sware root of x + 2, 4x^3 + y​

Sales of a certain mp3 clock radio are approximated by the relationship s(x) = 5600x + 31,000 (0 s x s 5), where s(x) denotes the number of clock radios sold in year x(x 0 corresponds to the year 2010). find the number of clock radios expected to be sold in 2013. clock radios +-17.69 points tanapcalcbr10 2.r.041. ask your teach my notes the cost and revenue functions for a certain firm are given by c(x) = 11x 20,000 and r(x) = 19x, respectively. find the company's profit function, p(x) p(x)