Let d = cost, in dollars, of 1 hot beverage 3 hot chocolates + 2 lattes + 1 donut = 820.70
3d +20 +0.95 = 20.70

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

Which equation represents the partial sum of the geometric series?

Find the roots of the equation below. x^2 - 6 + 9 = 0