At the beginning of an environmental study, a forest covered an area of 1500km^2. since then, the area has decreased by 6.3% 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 km^2. write an exponential function showing the relationship between y and y.

The correct answer is:

Explanation:

An exponential function is of the form

, where a is the initial population, b is 1 plus the amount of yearly change, and x is the number of years.

For our problem, a, the initial population, is 1500.

The yearly change is 6.3%; 6.3% = 6.3/100 = 0.063.  Since it is decreasing, this is negative; 1+(-0.063) = 0.937.

We use t as the number of years.

This gives us

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

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step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35