Problema Solution
Suppose the time a polar bear at the zoo spends outside varies inversely with the temperature. If the bear spends 3 hours outside when the temperature is 75 degree, how much time will it spend outside when the temperature is 30 degrees?
Answer provided by our tutors
y varies inversely with x if there is a constant k such that
y = k/x
xy = k
Let x represent the time spent outside when the temperature is 30 degrees:
75*3 = 30*x
........
........
x = 7.5 hr
The polar bear will spend 7 and a half hours outside when the temperature is 30 degrees.