At the beginning of an environmental study, a forest covered an area of 1500km2 . Since then, this area has decreased by 9.3% each year. Let t be the number of years since the start of the study. Let

At the beginning of an environmental study, a forest covered an area of 1500km2 . Since then, this area has decreased by 9.3% each year. Let t be the number of years since the start of the study. Let y be the area that the forest covers in km2 .