a large residential area has 1400 households withan average household income of $40,000, an averagehousehold size of 4.8, and, on average, 1.5 workingmembers. using the model described in example 8.2(assuming it was estimated using zonal averagesinstead of individual households), predict the changein the number of peak-hour social/recreational tripsif employment in the area increases by 25% andhousehold income by 10%.