The following chart shows the total number of wiretaps authorized each year by U.S. state and federal courts from 1990 to 2013. (- 0 represents 1990.) Wiretap orders NO) 4,000 3,500 3,000 2.500 2,000 1,500 1,000, 500 0 0 1990 5 10 15 25 2015 @ These data can be approximated by the following model. N(E)-7700.00 (0 st≤ 23) (a) Find N(20) and N(20). To how many significant digits should we round the answers? Why? O Four significant digits, as all of the constants in the model are specified to two significant digits. o Two significant digits, as all of the constants in the model are specified to two significant- digits. O Three significant digits, as all of the constants in the model are specified to two significant digits. Find N(20) and N(20). Be sure to state the units of measurement. N(20) - x N(20) Xtaps per year (b) The number of people whose communications are intercepted averages around 100 per wiretap order. What does the answer to part (a) tell you about the number of people whose communications were intercepted? In 2010 the number of people whose communications were intercepted was about and increasing at a rate of about people per year