Question

You want to set up an aquarium and need to determine what size tank to buy. The graph shows tank sizes using a rule that relates the capacity of the tank to the combined lengths of the fish it can hold.

If you want four 2-inch platys, three 1-inch guppies, and a 3-inch loach, what is the smallest capacity tank you can buy?

17-gallon tank
13-gallon tank
15-gallon tank
14-gallon tank

Answer 1

no o fish times in.

so
(4x2) + (3x1) + (1x3) = ??