It Is Estimated That T Days from Now a Farmer's $0.3 t ^ { 2 } + 0.6 t + 1$

Short Answer

It is estimated that t days from now a farmer's crop will be increasing at the rate of $0.3 t ^ { 2 } + 0.6 t + 1$ bushels per day. By how much will the value of the crop increase during the next 8 days if the market price remains fixed at $6 per bushel?