2y 3 4y 7 2 2 July 8, 2019 16 32 64 128 2y 3 4y 7 2 2 for y 1 2y 2 3 4y 7 )( 1 2y 3 7 2y 3 4y 2 3 2 * y 2 3 4+2y=7(y-2.3)