A group that facilitates quitting smoking used tar (X1) and nicotine (X2) data in milligrams (mg) to relate the carbon monoxide (in parts per million [ppm]) of various brands of cigarettes. TheR2was found to be high and positive, and the analysis returned an equation ofy= 1.375.53X1+ 1.33X2. Explain how the amount of tar and nicotine affect the carbon monoxide levels of the tested cigarettes. Additionally, given a tar amount of 1.3 mg and a nicotine amount of 14 mg, predict the level of carbon monoxide in ppm.