MTH 95 Lesson 9 - Intro to Rational Functions and Multiplication and Division of them Name: 1. Which of the following functions are classifies as “rational?” a. n(x)= 7x 2 +6 √ x − 6 3 − 7x 7 b. t(x)= 3 − 7x 3 7x 0.7 +6x − 6 c. m(x)= 7x +6 7x +6 d. r(x)= 7x 2 +6x − 6 3 − 7x −7 e. c(x)= 7x 2 +6x − 6 3+ |x| f. h(x)= 3 7x 2 +6x − 6 g. b(x)= 7x 2 +6x − 6 3 h. s(x)= √ 7x 2 +6x − 6 3 − 7x 7 i. a(x)= 7x 2 +6x − 6 3 − 7x 7 2. Determine the domains of the following rational functions. a. K (x)= 5x x − 10 b. g(x)= − 4x +3 x 2 − 3x − 40 c. F (x)= 2x − 7 x 2 +2x d. p(x)= x − 8 x 2 + 16 1 a d b √ − x 7 x 7 + | x | s s h