Answer:
2.25
Step-by-step explanation:
Given the cost model:
C(l) = l3 – l2 + l + 2.5
l = Length fo package
The length of a package that cost $11.00
11 = l³ - l² + l + 2.5
From the table given :
Length of mail which cost $11 will just be slightly greater Than 2 as the cost of 2 length mail cost 8.50
Taking l as 2.20
2.2^3 - 2.2^2 + 2.2 + 2.50 = 10.508
Taking a slightly higher value :
Put l = 2.25
2.25^3 - 2.25^2 + 2.25 + 2.50 = 11.078
Ww can conclude that the length of mail would be 2.25
x= 7/13. Hope I helped you !!!!
A is the answer, because the highest exponent is 2.
<u>quadratic</u>
A's expression foiled would be 2x^2 + x - 6
B's expression foiled would be 3x - 12, where the exponent on x is only 1.
D's expression foiled would be x^3 - x^2 - 12x, where the exponent on x is 3.
Answer:
-12, -14, 34
Step-by-step explanation: