Question

After plotting the data where x represents the length of the side of a polygon, and f(x) represents the area of the polygon, Jack used technology and determined the appropriate model to approximate the area of the polygon, f(x) = x2 + 2x + 5. Use the model Jack created to predict the area of a polygon that has a side length of 3. 10 18 19 20

Answer 1

Answer:

Option d. 20 $unit^{2}$

Step-by-step explanation:

After plotting data determined the appropriate model to approximate the area of polygon is

$f(x)=x^{2}+2x+5$, here x = length of the side of a polygon

We have to find the area of a polygon that has a side length = 3

$f(3)=3^{2}+2*3+5$

= 9 + 6 + 5

= 15 + 5 = 20

Option d. 20 $unit^{2}$ is the answer.

Answer 2

Answer:

See the attachment

Step-by-step explanation:

It is convenient to use a spreadsheet or graphing calculator for this.