The is answer is definitely D, because he computed the total population of 3,320 in the survey of his targeted people that he specified which was grade school and high school. In order for his computation to work for his market analysis he used the radius of 5m and the 75% he wanted to achieve.
Answer:x 55x5x5x56x6x7x74 4,527,600
476*1.05*1.15=574.77
The Striton family paid a total of $574.77 on their meal.
