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?
A)StartFraction 1.55 over 1 EndFraction = StartFraction x over 3.5 EndFraction
B)StartFraction 1.55 over 1 EndFraction = StartFraction 3.5 over x EndFraction
C)StartFraction 1 over 1.55 EndFraction = StartFraction x over 3.5 EndFraction
D)StartFraction x over 1.55 EndFraction = StartFraction 1 over 3.5 EndFraction