The polynomial of degree 3, P(x), has a root of multiplicity 2 at x = 3 and a root of multiplicity 1 at x = – 3. The y-intercer is y = - 13.5.
Find a formula for P(x).

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  P(x) = -1/2(x -3)²(x +3)

Step-by-step explanation:

When q is a root of the polynomial, (x-q) is a factor. This polynomial will be ...

  P(x) = a(x -3)²(x +3)

For x=0, the y-intercept will be ...

  P(0) = 27a = -13.5

Then the value of a is ...

  a = -13.5/27 = -1/2

The formula for P(x) is ...

  P(x) = -1/2(x -3)²(x +3) . . . . . . factored form

  P(x) = -0.5x³ +1.5x² +4.5x -13.5 . . . . standard form

answer: $34.31

step-by-step explanation:

$11.99 x 3 = $35.97

$35.97 - 10% = $32.37

$32.37 + 6% = $34.31

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step-by-step explanation: