----- Nội dung dịch tự động từ ảnh ----- 2. Write a function machine for each problem. Then find the input to t mystery number: a) I think of a number, muloply by 5 and add 7. The answer is 27 b) I think of a number, halve it then subtract 7 The answer is 2 Write an algebraic mapping to describe each of these sets of inputs and outputs: a) 4-1 7-4 3-0 8-5 b) 0-0 349 2-6 15-4.5