<span>B. f(x) = x^2 + 6x - 7
All you have to do is foil
</span>
The mean is the average.
To solve for the average we add all the numbers up and divide by how many numbers there are.
21, 23, 25, 25, 26, 28, 28, 28, 31, 33.
268 total, now divide by how many numbers there are.
268/10
Your mean is 26.8
Answer:
Step-by-step explanation:

We use the SSS congruence rule to prove the triangles to be congruent. From there, we then use CPCTC to show that angle I is congruent to angle L.
This is shown in the two column table (attached image below)
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Notes:
SSS = side side side
CPCTC = corresponding parts of congruent triangles are congruent