If two equations have the same moment generating function do they have the same distribution

Which expression is equivalent to the expression below? (6c^2 + 3c) / (-4c + 2) / (2c + 1) / (4c - 1)a. 3c(2c-1) / (2c + 1)b. -3c(2c-1)^2 / (2c + 1)^2c. 3cd. -3c(just took the test its d. -3c)

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

Describe the domain and range of y=2(3)^x-2+5