by Magdy1011961

1. -

7. [ 0 , ∞)
[ 0 , ∞)
0 X
0 Y
(0 , ∞)

8. (1B) 1A 48
R (-∞ , ∞)
[ 0 , ∞)
0 X
0 Y
y
(0 , ∞) (-∞ , 0)

9. (1B) 1A 48
R (-∞ , ∞)
R (-∞ , ∞)
0 X
0 Y
(-∞ , ∞)

12. (2A)(2B)(2C) 49

15. (14)(13) 54
g(x) = ∣x – 1 ∣-2 g(x) = ∣x – 8 ∣

18. (15) 54
f(x) = ∣x∣
g(x)
4
f(x)