Injury versus speed: The following data are adapted from a report20 by D. Solomon that relates the number N of persons injured per 100 accident-involved vehicles to the travel speed s in miles per...

Injury versus speed: The following data are adapted from a report20 by D. Solomon that relates the number N of persons injured per 100 accident-involved vehicles to the travel speed s in miles per hour.

a. Find an exponential model for N as a function of s.

b. Calculate N (70) and explain in practical terms what your answer means.

c. How does an increase in 1 mile per hour of speed affect the number of people injured per 100 accident-involved vehicles?