2x 3 x x 15 4 5 July 8, 2019 16 32 64 128 X 3 5 2x 4 15 x 5 30 1 4 2x 5 )- 3 x 10 )=- 15 5.5 x 15 3 2x 4 X 5 2x 15 ≥ x 4 3 −4x = 15 − 3(3x − 5)