Respuesta :

Step-by-step explanation:

r=-24/8=72/-24=-3  

By using this equation:

a(n)=a(1)*r^(n-1)

and we have a(1)=8 , r=-3    

a(n)=8*(-3)^(n-1)

a(10)=8*(-3)^(10-1)

       =8*(-3)^9

       =-157464

hope this helps