A certain forest covers an area of 4200km2 Suppose that each year this area decreases by 5% What will the area be after 10 years?
Use the calculator provided and round your answer to the nearest square kilometer.

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days