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f(x)=5*2^(x)

$f(x)=5 \cdot 2^{x}$

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Multiply powers: integer bases

Full solution

Q.

f(x)=5 \cdot 2^{x}

Identify Function and Value: Identify the function and the value of $x$ to substitute. $f(x) = 5 \cdot 2^x$ , $x = 3$
Substitute $x$ into Function: Substitute $x$ with $3$ into the function. $f(3) = 5 \cdot 2^3$
Calculate $2^3$ : Calculate the value of $2^3$ . $\newline$ $2^3 = 8$
Multiply to Get Answer: Multiply $5$ by $8$ to get the final answer. $\newline$ $f(3) = 5 \times 8 = 40$

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