Answer:
The explicit rule is:
Step-by-step explanation:
The explicit rule is given by:
[tex]a_n=a_1+d(n-1)[/tex]
The given sequence is 25,21,17,13
[tex]a_1=25[/tex]
d=21-25
d=-4
We plug in the values into the formula to get;
[tex]a_n=25+-4(n-1)[/tex]
[tex]a_n=25-4n+4[/tex]
[tex]a_n=29-4n[/tex]
