Respuesta :
If the base to which the power is taken is < 1 then its exponential decay.
B becuase of the 0.7
B becuase of the 0.7
We need to find the function that represents the exponential decay.
We are given options:
f(x) = 0.6(2)^x
f(x) = 3(0.7)^x
f(x) = 0.4(1.6)^x
f(x) = 20(3)^x.
Standard form of an exponential function is [tex]f(x)=a(b)^x[/tex].
Where a is the initial value and b is the growth or decay factor.
If value of b is less than 1 then it would be an exponential decay.
In the second option we are given f(x) = 3(0.7)^x, the value of b is 0.7.
That is less than 1.
