Question

Identify each function modeling either as exponential Growth or exponential Decay.
1) y = 0.65(1.3)x
2) y = f(x) = 2(0.65) x
3) s(t) = 0.8(1/8)x
4) y = 12(1.7)x
5) y = 5(6)x
6) y = 5/6(0.45)x

Answer 1

1. growth 2.decay 3. decay 4.growth 5.growth 6. decay

Answer 2

exponential function is like this form: y=C*a^x

Answer 3

exponential function is y=ab^x
where as b is the growth/decay factor
if 0<b<1 then the function is decaying
if b=1 the function is constant
if b>1 the function is growing

Answer 4

C does not matter growth or decay, only the a matters, when 0<a<1, decay; when a>1, growth,