16 .
Figure 5In Figure 5, which of the following is equal to csc θ?(A)(B)
(C)
(D)
(E)
17 . If and , then what is the value of g(f(4))?
(A) 5.8
(B) 7.4
(C) 7.7
(D) 8.2
(E) 10.3
18 . If xyz ≠ 0 and 30 x−5 y^12 z−8 = 10 x−6 y^5 z^4 , then what is the value of x in terms of y and z?