Final answer:
The correct inequality that models the given story is option c. $600 - 50w = $900.
Step-by-step explanation:
The correct inequality that models the given story is option c. $600 - 50w = $900.
In this case, River's initial savings account balance of $900 is decreased by $50 every week, so it should be subtracted from the value of the small iPad, $600. The resulting expression represents River's remaining savings after buying the iPad.