



 
Hi Mel, I think the problem here is that the variable name $x$ is used too many times. Let me reword the problem. Suppose $f$ is a function which has the property that for each real number $s, f(1+3s) = 1 \times s.$ For a real number $x$ find the value of $f(f(x)).$ Start of the solution:
Can you complete the problem from here? Penny  


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