Respuesta :

Answer:

The right answer is (a) 4x^2 +90x

Step-by-step explanation:

Thanks alot for this question :)

The answer is the first option: 4x² + 90x.

Explanation:

The whole area (walkway + swimming pool):
(2x + 20)(2x + 25)

= 4x² + 90x + 500

The swimming pool area:
25 x 20

= 500


The area of the walkway:
4x² + 90x + 500 - 500

= 4x² + 90x
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