Which of the following is the formula in solving finite geometric series. Sₙ = a₁(1+rⁿ)/ (1-r) Sₙ = a₁(1-rⁿ)/ (r-1) Sₙ = a₁(1-rⁿ)/ (1-r) Sₙ = a₁(1-rⁿ)/ (1+r)

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32