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Help again ! :))))))

Help again ! :))))))-example-1

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eliminate C, because f(x) will never be negative in this case
eliminate D, because the base 3 is bigger than 1, it is not a decay
the difference between A and B is the y intercept
when x=0, any number's 0th power is 1. f(x)=2*1=2
B shows the correct y intercept, A is wrong
User Siyah
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