Explicit equation for the sequence

Step-by-step explanation:

It is an arithmetic sequence

so we will use this equation:

a(n) = a1 +(n-1)d

and we have a1=6  d=3

Explicit equation: a(n) = 6 +(n-1)3

hope this helps

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

d. vertex

step-by-step explanation: