Why important to segment a market

Theodore is researching computer programming he thinks that this career has a great employment outlook so he’d like to learn if it’s a career in which he would excel what to skills are important for him to have and becoming a successful computer programmer

The economic advisor of a large tire store proposes the demand function d(p)equalsstartfraction 1900 over p minus 40 endfraction , where d(p) is the number of tires of one brand and size that can be sold in one day at price p. answer parts (a) through (e) below. a. recalling that the demand must be positive, what is the domain of this function? the domain consists of all possible values of ▼ for which ▼ p d(p) ▼ does not exist. is positive. is zero. is negative. exists.

The answer here, x=7, is not in the interval that you selected in the previous part. what is wrong with the work shown above?