A 4 b 5 c 8 July 8, 2019 16 32 64 128 A 4 b 5 c 6 d 8 Evaluate the expression when a 4 b =- 5 and c =- 8 Solve for b if a 4 b 5 and c 8 A 5 4 b (- 3 2 c 1 8 A b 3 4 dan b c 8 5 A b 4 5 b c 7 8 then a c If a 2 b 4 4 and c 5 8