The scenarios where it is greater than the original; (1) A 100% increase followed by a 33% decrease, (3) A 50% increase followed by a 33% decrease and (5) a 60% increase followed by a 40% decrease.
The scenario where it is lesser than the original; (3) A 75% decrease followed by a 50% increase.
The scenario in which it is the same as the original; (2) A $20 decrease followed by a $20 increase.
Explanation:
Assume the original values for all the scenarios are x.
Scenario 1; A100% increase is represented by x + 100% and then a 33% decrease will be x + 100% - 331.666x which is greater than x.
Scenario 2; A $20 decrease is x - $20 and then a $20 increase will equal x - $20 + $20 = $x, which equals the original $x.
Scenario 3; A 75% decrease is represented by x - 75% and then a 50% increase will be x - 75% + 50% = x - 25% = 0.75x, which is greater than x.
Scenario 4; A 50% increase is represented by x + 50% and then a 33% decrease will be x + 50% - 331.166x which is greater than x.
Scenario 5; A 60% increase is represented by x + 60% and then a 40% decrease will be x + 60% - 40% = x + 20%, 1.2x which is greater than x.
Answer: Option C. They're not similar because only one pair of corresponding angles in the two triangles is congruent.
Solution:
The only one pair of corresponding angles in the two triangles is congruent is the angle BGC in ΔCBG and the angle FGE in ΔFEG, because they are vertical angles (opposite by the vertex)