what was the production of gold in 1980?

Question

in Ghana from 1980 to 1995, the annual production of gold, G(t), I thousands of ounces can be modeled by G(t)=12r^2-103t+434, where t is the number of years since 1980.

Answer 1

Cameron,

What is the value of t, the number of years since 1980, for 1980?

Once you answer that, you can substitute that value into the expression for G(t).

You should be able to see the answer without doing any calculations.

Please let me know if you remain stuck. Thanks.

Michael.

Answer 2

The year 1980 corresponds to t=0, since 1980 is the starting year. A year has not passed yet.

 

Evaluate G(t) when t=0.

 

 

 

I advise you correct your equation though.  Based on the content, your equation does not seem right.