One pound of grapes costs $1. 55. Which equation correctly shows a pair of equivalent ratios that can be used to find the cost of 3. 5 pounds of grapes? StartFraction 1. 55 over 1 EndFraction = StartFraction x over 3. 5 EndFraction StartFraction 1. 55 over 1 EndFraction = StartFraction 3. 5 over x EndFraction StartFraction 1 over 1. 55 EndFraction = StartFraction x over 3. 5 EndFraction StartFraction x over 1. 55 EndFraction = StartFraction 1 over 3. 5 EndFraction.