There are 4 empty seats and 76 occupied seats in a train. What percentage of the seats on the train are empty?

5%

Step-by-step explanation:

fraction empty = empty / total

                                = 4/ (76+4)

                                 = 4/80

                                  =1/20

Changing to a percent

1/2 *5/5 = 5/100 = 5%

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