Book: Elementary and Intermediate Algebra by Mark Dugopolski (3rd) Chapter 4 sec

Question

Book: Elementary and Intermediate Algebra by Mark Dugopolski (3rd) Chapter 4 section 4.3 page 283,284 Problem 94. Perimeter of a rectangle. The width of a rectangle playground is 2x-5 feet and the length is 3x+9 feet. Write a polynomial P(x) that represents the perimeter and then evaluate this perimeter polynomial if x is 4 feet. cannot copy and paste diagram located on page 284 of the text. Book: Elementary and Intermediate Algebra by Mark Dugopolski (3rd) Chapter 4 section 4.3 page 283,284 Problem 94. Perimeter of a rectangle. The width of a rectangle playground is 2x-5 feet and the length is 3x+9 feet. Write a polynomial P(x) that represents the perimeter and then evaluate this perimeter polynomial if x is 4 feet. cannot copy and paste diagram located on page 284 of the text.

Explanation / Answer

Perimeter of rectangle is sum of two lengths and two widths: P(x) = 2(2x - 5) + 2(3x + 9) = 4x - 10 + 6x + 18 = 10x + 8 Evaluate P(x) if x = 4 ft P(4) = 10(4) + 8 = 48 ft

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