Answer
Initial Amount: 10
Decay Factor: 0.1
Work Step by Step
To find the initial amount, plug 0 in for x:
f(x) = 10(0.1$^{x}$)
f(0) = 10(0.1$^{0}$)
f(0) = 10(1)
f(0) = 10
0.1 is the decay factor because this is the value that is attached to the "x" exponent. In other words, this is the value that will determine by how much x decays.