Given:
Amount Elena has already spent = $40
If she goes to the store and buys more supplies, let's select the inequality that represents the total amount in dollars she spent.
Here, since she has spent $40 on supplies. Also she goes to the store to get more supplies, the total amount, d, will be greater than $40.
Therefore, the inequality that represents the total amount Elena spends on supplies is:
d > 40.
ANSWER:
d > 40.