At the beginning of an environmental study a forest cover an area of 1500 km second power since then this area has decreased by 9.8% each year let t be the number of years since the start of the study letter y b the area that the forest covers in km to the second power write an exponential function showing the relationship between y& t

Step-by-step explanation:

Let T be the number of years since the start of the study and y be the area that the forest covers in .

We have been given that at the beginning of an environmental study a forest cover an area of 1500 . Since then this area has decreased by 9.8% each year.

We know that an exponential function is in form , where,

y = Final amount,

a = Initial amount,

r = Decay rate in decimal form,

x = Time.

Let us convert 9.8% into decimal as:

We have been given that initial value (a) is .

Upon substituting our given values, we will get:

Therefore, our required exponential function would be .

fourth month

step-by-step explanation:

it is the one with the most keychains.