5. Which open sentence describes the following number story? Lucas was comparing prices on a pair of mini-speakers. At one store, the pair of speakers cost $19.95. At a second store, the same speakers cost $24.70. At a third store, they cost $18.50. If he buys the speakers at the lowest price, how much will he save over the highest price? $24.70 + $19.95 = s S= savings $24.70 x $19.95 = s S= savings $24.70 - $19.95 = s S= savings $24.70 ÷ $19.95 = s S= savings