Research studies show that the relationship between the tire pressure of a vehicle's tires and the life of the tires is quadratic. The following table shows data for the tire pressure of a car's tires (in pounds per square inch) and its
average tire life (in thousands of miles).
Tire Pressure Tire Life
29
46.8
32
57.6
34
58.8
36
60.0
38
58.8
40
57.0
42
52.8
Use a graphing or online regression calculator to find the quadratic function of best fit for this set of data. Then, predict
the tire life for this vehicle's tires given that the tire pressure is maintained at 30 psi (pounds per square inch).
47,800 miles
48,800 miles
50,800 miles
51,800 miles