The equation C(l) = l3 – l2 + l + 2.5 models the cost to mail a package as a function of its length. To the nearest quarter inch, approximately what is the length of a package that costs $11.00 to mail? Enter your answer as a decimal.
inches

A cubic equation in algebra is a one-variable equation of the form [tex]ax^{3} +bx^{2} +cx+d=0[/tex] where an is nonzero. The roots of the cubic function defined by this equation's left side are the answers to this equation.

Let's solve your equation step-by-step.

[tex]l^{3} -l^{2} +l+2.5=11[/tex]

Step 1: Subtracting 11 from both sides.

[tex]l^{3} -l^{2} +l+2.5-11=11-11[/tex]

[tex]l^{3}-l^{2} +l-8.5=0[/tex]

Step 2: Using cubic formula.

l=2.243293

Therefore, The length is 2.243 inches

To learn more about cubic formula refer to :

https://brainly.com/question/11421825

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The equation C(l) = l3 – l2 + l + 2.5 models the cost to mail a package as a function of its length. To the nearest quarter inch, approximately what is the length of a package that costs $11.00 to mail? Enter your answer as a decimal. inches

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What is cubic Formula?

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The equation C(l) = l3 – l2 + l + 2.5 models the cost to mail a package as a function of its length. To the nearest quarter inch, approximately what is the length of a package that costs $11.00 to mail? Enter your answer as a decimal.
inches