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Given m(x) = X2 -9 and e(x) = Jz x-2 and t (x) = m(x ) . e( x ) 17. What is the domain of t(x)? Justify your answer. use mix) and e(x) (2) 18. How many X-intercept will t(x) have? Justify your answer. use mux and e() (2) 19. Given k(x) = 3-X , c(x) = 3x-4 and r(x) = klx) . C(x). Describe the end behaviour of r(x). Justify your answer. use the properties of k(x) and ClX]