A rectangular garden has a walkway surrounding it that is 4 feet wide (a uniform width

Mathematics

1 answer:

Oksana_A [137]3 years ago

7 0

Answer: 300 square feet

Step-by-step explanation:

length of walkway = 20 + 2x

width of walkway = 15 + 2x

A(x) = (20 + 2x)(15 + 2x)

A(x) = 300 + 30x + 40x + 4x2

A(x) = 300 + 70x + 4x2

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