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timofeeve [1]
3 years ago
6

If f(x)=(1/8)(8^x) what is f(3)? A. 1/512 B. 1/64 C. 512 D. 64

Mathematics
2 answers:
Svetach [21]3 years ago
8 0

Answer:

D. 64

Step-by-step explanation:

To evaluate the equation you just have to put the value given into the equation.

The equation given is:

f(x)=(\frac{1}{8})(8^{x})

So to evaluate f(3) you just put the 3 in the value of x

f(x)=(\frac{1}{8})(8^{3})

This would be equal to:

f(x)=(\frac{1}{8})(512)

Once you do the mutiplication you get:

f(x)=(\frac{512}{8})

And the answer would be:

f(x)=64

cestrela7 [59]3 years ago
4 0
Hi there!

Let's solve this problem step by step!
f(x) =  \frac{1}{8} (8 {}^{x})

To find f(3) we must substitute x = 3 into the formula.
f(3) =  \frac{1}{8} (8 {}^{3} )

Now we use PEMDAS (Parenthesis, exponents, multiply, divide, add, subtract) to find our answer.

Work out the exponents inside the parenthesis first.
f(3) =  \frac{1}{8}  \times 512

And finally multiply.
f(3) =  \frac{1}{8}  \times  \frac{512}{1}  =  \frac{512}{8}  = 64

Hence, the answer is D. 64.
~ Hope this helps you!
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