Respuesta :

nadia2318116

Step-by-step explanation:

it is geometric  

so we will use this equation:

a(n)=a1*(r)^(n-1)

and we have a(1)=75 , r=15/75=3/15=1/3

explicit formula: a(n)=75*(1/3)^(n-1)

hope this helps

maxwellS23646

Answer:

75(1/5)^n-1

Step-by-step explanation:

I just did it.