Evaluate each series.
50 points and brainless!

Sum of n terms of a GP:

Sₙ = a₁(rⁿ - 1)/(r - 1)

#1

a₁ = 5r = 2n = 9S₉ = 5(2⁹ - 1)/(2 - 1) = 5(511) = 2555

Correct choice is C

#2

a₁ = 12r = 1/2n = 5S₅ = 12(1 - (1/2)⁵)/(1 - 1/2) = 12(31/32)/(1/2) = 23.25

Correct choice is A

Where's the rest of the