Answer:
1) <u><em>Formula for experimental probability:</em></u>
Experimental Probability = 
2) Any performance or a random experiment is called a trial.
Since the scale factor is smaller than one (the original), the resulting image is smaller than the original.
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-2(x + 3) = 8
Multiply -2 with x and 3
-2x -6 = 8
Now add 6 to both sides
-2x -6 = 8
+6 +8
-2x = 16
Lastly divide -2 from both sides to find x
-2x = 16
—— —-
-2x -2x
X = -8