The US Senate has 100 members after a certain election there are 20 more Democrats than Republicans with no other parties represented how many members of each party were there in the Senate

60 democrats

40 republicans

1/5^2 = 7.56/45

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2