37 .
(A) −10
(B) −6
(C) 0
(D) 6
(E) 10
38 . If f(x) = x^3 , which of the following must be true?
(A) f(−x) = f(x)
(B) f(−x) = −f(−x)
(C) f(−x) = −f(x)
(D) f(x) = −f(x)
(E) f(x) > f(−x)39 .
(A) −1.25
(B) −0.80
(C) 0.80
(D) 1.25
(E) The limit does not exist.