Respuesta :

Answer:

318

Step-by-step explanation:

Arithmetic sequence:

a = 28 ; d = 10 & n = 30

[tex]\boxed{a_{n}=a +(n-1)d}[/tex]

a₃₀ = 28 + (30 - 1)*10

      = 28 + 29 *10

     = 28 + 290

     = 318