The cost, (in dollars) to produce gallons of ice cream can be expressed as .

(a) In the expression ,
what are the units of 300?
what are the units of 375?

(b) In the expression ,
what are the units of 300?
what are the units of 1.8?

(Be sure that you can carefully put into words the meanings of each of these statement in terms of ice cream and money.)