Suppose that Will's preferences are represented by the following: u left parenthesis x comma y right parenthesis equals 30 ln left parenthesis x right parenthesis plus y. space Suppose that the price of good x is $5, the price of good y is $1 and income is $40. If the price of good x rises to $6, what is the income effect on good x? 0 -1 -2 -5