Answer:
i can only help for the second question
Answer:
430
Step-by-step explanation:
Use PEMDAS.

Only one because the angles must add up to 180 degrees
Answer:
$25.60
Step-by-step explanation:
#1. 100-20= 80
#2. 80 divided by 100= 0.80
#3. 0.80x 32= 25.60
25.60 is your answer