The gross national product (GNP) of a certain country is $N ( t ) = t ^ { 2 } + 3 t + 121$ billion dollars where t is the number of years after 1990. At what percentage rate will the GNP be changing with respect to time in 1995? Round your answer to one hundredth of a percent, if necessary.

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The Answer of The gross national product (GNP) of a certain country is $N ( t ) = t ^ { 2 } + 3 t + 121$ billion dollars where t is the number of years after 1990. At what percentage rate will the GNP be changing with respect to time in 1995? Round your answer to one hundredth of a percent, if necessary.

The Gross National Product (GNP) of a Certain Country Is N(t)=t2+3t+121N ( t ) = t ^ { 2 } + 3 t + 121N(t)=t2+3t+121

The Gross National Product (GNP) of a Certain Country Is $N ( t ) = t ^ { 2 } + 3 t + 121$