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RUDIKE [14]
1 year ago
10

Find F(5) for f(x)= 1/4(2)^x

Mathematics
2 answers:
Serga [27]1 year ago
7 0

If we have a function f(x), f(5) is f(x) but replacing x with 5. The result give us a value of y and a point of the function, (x, y).

f(5) =  \frac{1}{4}  ({2})^{5}  =  \frac{32}{4}  = 8

ANSWER A

Lemur [1.5K]1 year ago
5 0

Hello!

Substitute x = 5 to find f(5).

⇒ f(5) = 1/4(2)⁵

⇒ f(5) = 32/4

⇒ f(5) = 8

∴ The correct option is A.

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_____

<em>Additional comment</em>

As with many multiple-choice questions, you can simply pick the answer that is not outlandish. The circle will fit into a square that is 10 cm on a side, so its total area is less than 100 cm² (eliminates choice B).

The shaded area is definitely more than 1/4 of that 100 cm² square, so choices C and D are eliminated, too. The only choice that is not unreasonable is choice A.

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Read 2 more answers
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