In Each of the Cases Below, Explain Whether the Change

In each of the cases below, explain whether the change will lead to a shift in supply or a shift in demand and in which direction.
(i) You are studying the market for bananas. Suppose that the minimum wage that is paid to banana farm workers increases significantly.
(ii) You are studying the market for bananas. Suppose that a new and popular research report emerges that discusses previously unknown benefits of eating bananas.
(iii) You are studying the market for cars. Suppose that public transportation becomes free in the particular market that you are studying.