Mathematics: I need help finding area of this shape

I need help finding area of this shape

Ответ:

kayelynn003

06.05.2021

Mathematics

Bruce's function:

$\displaystyle y=\frac{1}{4}x$

Felicia's function:

$\displaystyle y=\frac{1}{9}x$

Bruce's tiles cover more area

Step-by-step explanation:

Functions

We need to compare the area covered by tile of both Bruce and Felicia. We are required to find the function y, the area covered by the number of tiles he used, x.

We know the tiles used by Bruce cover 1/4 of a square foot, this is written as:

$\displaystyle y=\frac{1}{4}x$

To find the function for Felicia, we must use the data provided in the table

For example,

For x=9 tiles, y=1 sq ft

For x=18 tiles, y=2 sq ft

If we set

$\displaystyle y=kx$

We can find the value of k

$\displaystyle 1=9k$

$\displaystyle k=\frac{1}{9}$

Thus

$\displaystyle y=\frac{1}{9}x$

Testing the constructed function with x=18 and x=27

$\displaystyle y=\frac{1}{9}18=2$

$\displaystyle y=\frac{1}{9}27=3$

The function is complete and accurate.

Comparing both functions we see that Bruce's tiles cover more area because

$\displaystyle \frac{1}{4}\frac{1}{9}$

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I need help finding area of this shape

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