Let f(x) = 3^x-2. Find f(4) ?

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Let f(x) = 3^x-2. Find f(4) ?

Evaluation Exponential Functions

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Answer 1 · 2017-10-31T13:23:54

$9$ $9$ ... or $79$ $79$ .

Explanation:

Should have written the question more clearly. Since we are replacing $x$ $x$ with $4$ $4$ as seen from $f (4)$ $f(4)$ , we can simply plug $4$ $4$ into $3^{x} - 2$ $3^x-2$ to be $3^{4} - 2$ $3^4-2$ . This would be equal to $79$ $79$ .

However, if the equation were written like this, which could be more likely:

$3^{x - 2}$ $3^(x-2)$

your answer would be $9$ $9$ , as the exponent would just be $2$ $2$ , since you are simply taking away $2$ $2$ from $4$ $4$ .

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Let f(x) = 3^x-2. Find f(4) ?

Evaluation Exponential Functions

1 Answer

Explanation:

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