The braking distance for a certain type of vehicle at various speeds is shown in the following table Speed miles per hour Braking distance feet 30 75 4 60 302 2 a Use the information in the table to compute the marginal change in feet per mile per hour Round your answer to decimal place feet per mile per hour b As this vehicle s speed increases by 10 miles per hour what happens to the braking distance Round your answer to nearest whole number The braking distance increases by feet for every 10 miles per hour increase in speed