Predict the major organic product of each of the following reactions: (a) Cyclohexyl bromide and potassium ethoxide

Question:

Predict the major organic product of each of the following reactions:
(a) Cyclohexyl bromide and potassium ethoxide
(b) Ethyl bromide and potassium cyclohexanolate
(c) sec-Butyl bromide solvolysis in methanol
(d) sec-Butyl bromide solvolysis in methanol containing 2 M sodium methoxide