This situation can be modeled by the exponential growth equation, which is:
[tex]f(t)=a(1+r)^t^{}[/tex]where a is the initial amount, r is the growth rate (as a decimal), and t is time.
In this case, f(t) represents the level of CO2 emissions, the initial amount is 318,280 metric tons of CO2, and r is 0.07. Replacing these values, and t = 12, we get:
[tex]\begin{gathered} f(12)=318,280\cdot(1+0.07)^{12} \\ f(12)=318,280\cdot2.252 \\ f(12)\approx716,828 \end{gathered}[/tex]12 years in the future, 716,828 metric tons of CO2 will be produced