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4 years ago

7

Consider the function f(x) = 4x2 + 5. Find the value of f(x) when x = 2 and select the correct answer below. A. 13 B. 21 C. 69 D

. 89

2 answers:

Advocard [28]4 years ago

8 0

The answer is B. 21

f(x) = 4(2)^2 + 5
f(x) = 4(4) + 5
f(x) = 16 + 5

f(x) = 21

egoroff_w [7]4 years ago

3 0

Substitute 2 for x

$f(2)=4(2)^2+5$
$f(2)=4(4)+5$
$f(2)=16+5$
$f(2)=21$

answer is B
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Using area of regular Polygon, the perimeter of the total grazing area of regular polygon is 100 feet and the cost to place a fence around the entire grazing area is $795.

According to the question,

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In part 1 we asked to find the total perimeter of the grazing area using below polygon formula

The formula of the area of regular polygon = ap/2

Where a is apothem and p is the perimeter.

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Now cost of fencing 1 foot = $7.59

So, cost of fencing 100 feet = 7.59 x 100 = 759

Hence, the cost to place a fence around the entire grazing area of polygon is $795.

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