Mr. and mrs. vonce, both age 62, filed a joint return for 2018. they provided all the support for their daughter, who is nineteen, legally blind, and has no income. their son, age 21 and a full-time student at a university, had $6,200 of income and provided 70% of his own support during 2018. how many individuals qualify as a dependent for the vonces?

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?