The answer to the question is 25t+26
Answer:
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0 1 2 (3) 4 5 6 7 8 9 10
You can see the polygon in the attached figure.
It's a trapezoid, so it's not equilateral, nor regular.
280 because 28 *10 is 280.
-10x+4.
5x-7x is -2.
-2x-8x is -10x.
you cannot simplify the 4
alternatively, you could write -10x+4 as
-2(5x-2)