Question 20

This question refers to a figure in the original PDF.

• (A)x ∈ ( , ∞)
• (B)x ∈ [ , ∞) 2 9
• (D)x ∈ [– ∞, ) 2 2 Fig 6.9 (D) x ∈ (– ∞, ] 7 7 7