If 3x 2 2x 7 0 then x 1 3 2 July 8, 2019 16 32 64 128 If −2 ≤ 3x − 7 ≤ 8 then If 7 + 3x = 22 then 2x = If f (x) = (3x + 7)2 then f (1) =
