Question

3. The Gross Domestic Product (GDP) of a certain country is projected to be t2 + 2t + 50
billion dollars t years from now. Find the time t when the GDP of the country will first
equal or exceed $58 billion.​

Answer 1

Answer:

After 2 years.

Explanation:

t^2+2t+50=58----(58 billion GDP)

t^2+2t-8=0

t^2+4t-2t-8=0

t(t+4)-2(t+4)=0

(t-2)(t+4)=0

hence t=2 and t=-4

As time cant b negative t=2