Answer:
C 
Step-by-step explanation:
Answer:
3) 180°-50°=130°
4)90°-50°=40°
Step-by-step explanation:
5)angle DEC=50°(VERTICAL OPPOSITE ANGLE)
x=50°-15°=35°
6)Y+30°+50°=180°(linear pair)
Y=180°-80°
Y=100°
Answer:
25% increase
Step-by-step explanation:
You multiply the original number (0.25) by 100.

% increase = Increase ÷ Original Number × 100. If the answer is a negative number, that means the percentage change is a decrease.