Answer:
Step-by-step explanation:
x = -5
-5 < -4 and if x<-4 then f(x) = - 2x - 8
so:
f(-5) = - 2(-5) - 8 = 10 - 8 = 2
3. opposite
30°
4. 50° + 30° + 2x = 180°
80° + 2x = 180°
2x = 100°
-25.44
5/2