Sarah takes courses on a quarter system. three times a year, she takes 15 credits at a tuition rate of $ 280 per credit; her fees are $ 200 per quarter and her room in a shared house costs $ 140 per week. round your answer to the nearest dollar

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.