Respuesta :
an=a1(r)^(n-1)
a1=first erm
r=common ratio
firs term is -5
we times each term by 5 to get next term so r=5
[tex]a_n=-5(5)^{n-1}[/tex] is the explicit formula
a1=first erm
r=common ratio
firs term is -5
we times each term by 5 to get next term so r=5
[tex]a_n=-5(5)^{n-1}[/tex] is the explicit formula