You can model the population of a certain city between the years 1965 and 1995 by the radical function P(x)= 75,000 cubed root of (x-9140) . Using this model, in what year was the population of that city 245,000?

Question

You can model the population of a certain city between the years 1965 and 1995 by the radical function P(x)= 75,000 cubed root of (x-9140) .  Using this model, in what year was the population of that city 245,000?

dinmosiaren · Answer

hello are you there?

dinmosiaren · Answer

The answer choices are 1973   1975   1979  1970

mathstudent55 · Answer

Solve the equation
$$245,000 = 75,000\sqrt[3]{x-9140}$$ 
First, divide both sides by 75,000. Then cube both sides to get rid of the cubic root. Then solve for x. Are you sure you copied the problem correctly?