For each of the following, identify the distribution based on the MGF. Be sure to specify the name of the distribution and the value(s) of the parameter(s).
d.) MX(t) = e^(0.9(et−1)), t ∈ (−∞,∞).
e) MX(t) = (0.75et) / (1−0.25et), t < −ln 0.25.
f) MX(t) = ((0.4et) / (1−0.6et)) * 20, t < −ln 0.6.