In a factory in Surat, Machine A applies function f(x) = 2x to weight x. Machine B applies g(x) = x + 15. If a material passes through Machine A and then B, the combined operation is:

In a factory in Surat, Machine A applies function f(x) = 2x to weight x. Machine B applies g(x) = x + 15. If a material passes through Machine A and then B, the combined operation is:

• A. 2x + 15
• B. 2x + 30
• C. x + 15
• D. 3x + 15

Answer: A) 2x + 15

Explanation: The material goes through A first, yielding f(x) = 2x. Then it goes through B, which applies g to the result. So we need g(f(x)) = g(2x) = 2x + 15.