19 Find the range of the function f x 3x 2 if its domains is defined by 1 x 8 1 3 y 24 2 1 y 26 3 1 y 10 4 1 x 26 20 The length of a rectangle is 2 more than 3 times the width How do you express the length 1 in terms of width w 1 1 2 3w 2 w 31 2 3 1 3w 2 4 1 2 3w 21 Solve forx x 2 x 4 1 8 2 13 3 15 4 23