Learn To Be brings free online tutoring students around the United States. Volunteer and gain community service hours while helping students who need it./p>

Interpreting linear expressions

Molly and Arthur are taking their daughter Ginny on a roller coaster ride. For safety, they need to find their total weight before getting into the same car. Molly’s weight is MM, Arthur’s weight is AA, and Ginny’s weight is GG. There are different ways of thinking about how to add the three weights.
Match the expressions to the corresponding descriptions of how to add the weights.
For reference:
Molly is a female and an adult.
Arthur is a male and an adult.
Ginny is a female and a child.
 
Add the adults' weights, then add Ginny's weight to the result
Add the females' weights, then add Arthur's weight
Neither of these
(G+M)+A(G+M) + A
(A+G)+M(A+G)+M
(M+A)+G(M+A)+G
(G+M)+G(G+M) + G