I will mark branliest if correct

Which equation matches the graph shown ?

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25