Simba and Zola are married but file separate returns. Simba received $80,000 of salary and $1,200 of taxable dividends on stock he purchased in his name and paid from the salary he earned since the marriage. Zola collected $900 in taxable interest on a certificate of deposit she inherited from her aunt. Compute Zola’s gross income under two assumptions as to the state of residency of the couple. If an amount is zero, enter "$0."

Total marketing effort is a term used to describe the critical decision factors that affect demand: price, advertising, distribution, and product quality. define the variable x to represent total marketing effort. a typical model that is used to predict demand as a function of total marketing effort is based on the power function: d = axb suppose that a is a positive number. different model forms result from varying the constant b. sketch the graphs of this model for b = 0, b = 1, 0< b< 1, b< 0, and b> 1. (we encourage you to use excel to do this.) what does each model tell you about the relationship between demand and marketing effort? what assumptions are implied? are they reasonable? how would you go about selecting the appropriate model?