4. An important issue in economic development is the relationship between fertility and female literacy. With data from 110 countries, the following linear relationship between the female literacy rate and the number of births per woman (fertility rate) was estimated. When the literacy rate is 0%, the fertility rate is 7.63 per woman; and when the literacy rate is 100%, the fertility rate is 2.42 per woman. (a) On a figure with female literacy on the vertical axis and fertility on the horizontal axis, draw a graph of the linear relationship. Referring to the linear relationship, if the literacy rate is 60%, what would be the fertility rate (approximately)? (b) A large cost of having a baby is the time that the mother must invest to bear and rear the child. For a more educated woman, is the value of this time higher or lower? (0) In the chart, mark \"cost of child\" on the vertical axis. Does the trend line have any relation to a demand curve? Please explain. (d) Please give an alternative explanation of the gure: Use the fertility rate to explain female literacy