PLEASE HELP ASAP
The 3rd term of an arithmetic sequence
is −2, and the 8th term is −32. Write a function to describe this sequence.

Respuesta :

Answer:

function would look like (30n-44)/7 diescribing the sequence where n is the term of the number. For example : -2 is first term so its n =1.

Step-by-step explanation:

a= -2( a= first term)

using formula,

n=8

now,

-32 = a+(n-1)d

-32 = -2 +(8-1)d

or, -32 = -2 + 7d

or, -32+2 = 7d

or, -30 = 7d

so, d = -30/7

d = common difference

now

f(x) = a+(n-1)d

= -2+(n-1)30/7

= -2 + (30n-30)/7

= (-14+30n-30)/7

so, f(x) = (30n-44)/7