Answer:
80% decrease
Step-by-step explanation:
A percentage change can be calculated using ...
percent change = ((new value)/(old value) -1) × 100%
= (16/80 -1) × 100%
= -0.80 × 100% = -80%
The minus sign indicates the change was a decrease.
From Saturday to Tuesday, customers decreased 80%.
Answer:
since it is in the tenths place, it'd be 6/10, or 6 tenths.
If both triangles are similar the ratio of sides will be same

Answer:
In 5 years, the price increased about 30%.
I am not good at perentages, so correct me if I'm wrong. Also this is an estimation, not the exact percentage.
Step-by-step explanation:
if there are no typos, then the second and the fourth answers are correct.
1 - 1.7 = -0.7 or -2×0.35
-2x = -2(x)