Since the total is 42 divide by two since they are the same length so it would be 21
Answer:

Step-by-step explanation:
<u>Find the derivative of the function when x=3</u>
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Since the change in the value of the function is
and we know that the change in x is
, then we have:




Therefore, the 2nd option is correct
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Answer:

Step-by-step explanation:
The sides AB and CD are parallel to the x-axis and 5 units apart. The length of side AB is 6-(-12) = 18 units. The area is the product of these dimensions:
Area = (Base)(Height) = (18 units)(5 units) = 90 units²