Ask Question
8 April, 09:31

The area of a rectangular deck can be modeled by f (x) = 2x3 + 30x2 - 6x - 90. If x + 15 represents the width, which expression represents the length?

+5
Answers (2)
  1. 8 April, 11:46
    0
    Area of a rectangle = length * width

    f (x) = 2x ³ + 30x² - 6x - 90

    f (x) = 2 (x³ + 15x² - 3x - 45)

    f (x) = 2 (x² (x + 15) - 3 (x+15))

    f (x) = 2 (x²-3) (x+15)

    If width = x+15, then

    length = 2 (x²-3) = 2x²-6
  2. 8 April, 13:02
    0
    Divide f (x) by x + 15

    this comes to 2x^2 - 6 which represents the length
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “The area of a rectangular deck can be modeled by f (x) = 2x3 + 30x2 - 6x - 90. If x + 15 represents the width, which expression represents ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers