Answer:
Decreased by 20%.
16 lbs is 80% of 20 lbs.
Step-by-step explanation:

y × 20 = 16 × 100
20y = 1600
20y ÷ 20 = 1600 ÷ 20
y = 80
100% - 80% = 20%
If it is parallel lines cut by a transversal then they are probably equal. Alternate exterior.
Answer:
r≈4.75
Step-by-step explanation:
X is 10
I have shown the calculation in the attachment.
Ignore the scribbles
Search up Elimination and substitution