Practice interpreting linear expressions.

Problem

Today, Isaac needs to walk his dog, water the garden, and feed his fish. D is the amount of time it takes to walk his dog, G is the amount of time it takes to water the garden, and F is the amount of time it takes to feed his fish.
Match the expressions to their meanings. Each meaning may match more than one expression.
For reference:
The dog is an animal, and he needs to go outside to walk.
The garden is a bunch of plants (not an animal), and it is outside.
The fish is an animal, and she lives in a water tank inside.
 
The total time of the outside activities
The total time of the activities involving animals
The total time of all the activities
None of these
F, plus, G
F, plus, left parenthesis, D, plus, G, right parenthesis
left parenthesis, F, plus, D, right parenthesis, plus, G
D, plus, F
F, plus, D
D, plus, G