y=3(2^x)

y=3(2^x)

 

y=6^x

I'm like, 99.9 % Sure ! :)

Not quite Hayley.

y=3(2^x)

means

y=3*(2^x)

or

\(y=3\times 2^x\)

and this cannot be simplified.

 

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I think that you a getting it confused with   

y=(3^x)(2^x)

\(y=(3^x)(2^x)=3^x2^x=6^x\)