Hi, I am not sure what category this belongs, I suppose it is here.

Net investment is given by the expression I(t) = 140t3/4. Note that net investment represents the change in the capital stock that occurs at time t. Can you use this information to generate an equation for the capital stock as a function of time t?

Use your equation to consider the following: If K today(t=0) = 150,000, what will K be equal to in 10 years (t=10)?

I have no idea. Help please?