Respuesta :
Hey there, and good morning to you! :D
20 x 5^n-1
Plug in 1 (for the first term)
20 x 5^1-1
20 x 5^0
A power to 0 is always 1.
20 x 1= 20
"B" 20 is the correct answer.
I hope this helps!
~kaikers
20 x 5^n-1
Plug in 1 (for the first term)
20 x 5^1-1
20 x 5^0
A power to 0 is always 1.
20 x 1= 20
"B" 20 is the correct answer.
I hope this helps!
~kaikers