If 𝑓(𝑥) is a function such that 𝑓(𝑥+𝑦)=𝑓(𝑥) 𝑓(𝑦) 𝑎𝑛𝑑 𝑓(3)=125 𝑡ℎ𝑒𝑛 𝑓(𝑥)=
a) 5    b) 𝑥5  c) 5𝑥 d) 5x

 

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