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nadezda [96]
3 years ago
15

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

Mathematics
2 answers:
Shalnov [3]3 years ago
7 0

Answer: 2.25

Step-by-step explanation:

Anettt [7]3 years ago
6 0

Answer:

Step-by-step explanation:

Set the cost equation C(l) = l3 – l2 + l + 2.5 equal to $11.00 and solve for l:

                                     C(l) = 2l + 2.5 = $11, or

                                               2l = 8.5, or l = length = 4.25 inches

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