Astate park has two pools. the olympic size pool holds 8.12 x 105 gallons of water and the smaller pool holds 5.27 x 105 gallons of water. what is the combined capacity of the pools? a.1.339 x 10^4 gallons b.1.339 x 10^6 gallons c.13.39 x 10^10 gallons d.1.339 x 10^10 gallons