Question

Car tires need to be inflated properly. Over inflation or under inflation can cause premature treadware. The data below show tire life for different values of a certain type of tire. a) Find a quadratic polynomial that best fits the data. b)Use your results from part a) to estimate the pressure that gives the longest tire life. lb/square inch=26 tire life(mile)=50; lb/square inch=28 tire life =66; so for 31 is 78, for35 is 81, for38 is 74, for42 is 70and for 45 is 59

Answer 1

You have alot of data so my guess is that you can use a calculator or spreadsheet to help you create the model. I used a TI-84 (see pic)