(Adjusting prices to dividends and splits) Below you'll find weekly stock price, dividend, and split data for Visa:

(a) Claculate the dividend and split-adjusted returns for each of the weeks.

VISA PRICE, DIVIDEND AND SPLIT DATA Q1, 2015
Date	Closing price	Dividend during week	Other information
5-Jan-2015	260.53
12-Jan-2015	254.95
20-Jan-2015	258.29
26-Jan-2015	254.91
2-Feb-2015	267.42
9-Feb-2015	269.63
17-Feb-2015	273.00	0.12	12-Feb-15
23-Feb-2015	271.31
2-Mar-2015	269.34
9-Mar-2015	265.03
16-Mar-2015	67.41
23-Mar-2015	65.54		4: 1 Stock Split (Mar 19, 2015)
30-Mar-2015	65.29