2. MTR Model Problems Murph has a box where he keeps shells that he
collects from the beach. When the box was empty, it weighed 43 ounces.
Now that it is full of shells, it weighs 668.3 ounces. If Murph has 74 shells
that are similar in weight, about how many ounces does each shell weigh?
Write and solve an equation to model this situation.

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