Answer:
33.3333% decrease
Step-by-step explanation:
Percent change formula:
, where x is the new value and y is the starting value.
Plug in values and solve:

-33.3333% change, or a 33.3333% decrease.
Answer:
The answer is the second option: {4, 7, 10...}
Answer:
∠ABC = 50°
Step-by-step explanation:
Since this is a parallelogram, opposite angles are congruent.
Therefore, ∠D ≅ ∠B
∠D = 38° + 12°
∠B = 38° + 12°
∠B = 50°
∠ABC = 50°