How many acres?

[justan4cat]

The number of acres in a landfill is given by the function: B=6900[sub:3dgdmgn4]e[/sub:3dgdmgn4][sup:3dgdmgn4]-0.02t[/sup:3dgdmgn4]
t is measured in years. How many acres will the landfill have after 10 years?

Do I substitute the 10 for t the solve for B?

 

[wjm11]

The number of acres in a landfill is given by the function: B=6900e-0.02t
t is measured in years. How many acres will the landfill have after 10 years?

Do I substitute the 10 for t the solve for B?

Yes, just plug in the time. Recognize that this is an exponential decay function. Perhaps it describes how many open acres remain in the landfill?