What is the area of this figure?

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units²

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2

Y=21.95x+10 y=22.45x solve by substitution