A pet store is having a pet fish sale. Lenny bought p platies and l loaches. Write an algebraic expression to represent the total cost of the fish.

You would write the expression as nP + nL=cost because it's the number of plagues that he buys plus the number of loaches that he buys

Total cost = XP+XY

Step-by-step explanation:

Let x represent the unit cost of Platies (P)

Y represent the unit cost of loaches (L)

Cost of Platies = P * X = XP

Cost of Loaches = L * Y = LY

Total cost = XP + LY