ques in the pic

One type of airway resistance in human lungs can be approximated using the equation 8Ln R = IT 2 where R is the resistance, L is the length of the airway, n = 1.266 is the gas viscosity, and r is the radius of the airway. (a) True or False: If L doubles, then R doubles as well. (b) True or False: If r doubles, then R decreases by 50%. (c) Suppose r increases by 4%. By what percentage does R increase or decrease? Enter your answer rounded to three decimal places (e.g. for 10% increase, enter 10.000; for 10% decrease enter -10.000)