Find the fifth term of the sequence 3, 5, 9, 17, _

(If you need help: The rule of the following sequence is k = 2n +1 )

33

Step-by-step explanation: the number added itself gets multiplied by two. so 3+2 then 5+4 then 9+8 then 17+16

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads