Respuesta :

The sum would be written as:
[tex]\Sigma_{n=1}^{5} (3n-2)[/tex]

It goes from n=1 to =5 because it is the first 5 terms of the sum.
The sequence has a first term, a₁, of 1.  The common difference, d, is 3.  The explicit formula would then be:
[tex]a_n=1+3(n-1)[/tex]

Using the distributive property to simplify, we would have:
[tex]a_n=1+3n-3 \\a_n=3n-2[/tex]

Using sigma notation, the sum is expressed as:

[tex]\sum_{i = 0}^{4} 1 + 3n[/tex]

In the given sum, we have that:

  • The first term is 1.
  • The difference between consecutive terms is 3.
  • There are 5 terms, with indexes ranging from 0 to 5 - 1 = 4.

Hence, the sum, in sigma notation, can be modeled by:

[tex]\sum_{i = 0}^{4} 1 + 3n[/tex]

A similar problem is given at https://brainly.com/question/16599038