At the beginning of an environmental study, a forest covered an area of 1500 km². Since then, this area has decreased by 5.8% each year. Lett be the number of years since the start of the study. Let y be the area that the forest covers in km?.
Write an exponential function showing the relationship between y and t.

Area covered by the forest in the beginning = 1500km²

Decrease in area each year = 5.8% = 5.8/100 × 1500 = 87km²

Decrease in the area of the forest in t years = 87t

Area of forest now = y

y = 1500 - 87t

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2