R 4 )( 3r 1 July 8, 2019 16 32 64 128 3r r 1 )+ 2 3r 4 )= 18 R 4 3r 2 1 R 4 p 1 3r Simplify 4(r + 1) + 3r 4 1 3r r 8 3r 16 4 r 3 R 4 1 3