PLEASE HELP ME WITH THIS ALGEBRA QUESTION

The first four terms of the sequence are: {-10,-23,-62,-179}

Step-by-step explanation:

Given recursive formula is:

First term = a1 = -10

The first term is already known. In order to find the next terms, we will put n=2,3,4 in the recursive formula.

Putting n=2

Putting n=3

Putting n=4

Hence,

The first four terms of the sequence are: {-10,-23,-62,-179}

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

i hope this is what you were looking for.

see attached graph