Answer:
reduce her production level.
Step-by-step explanation:
In a perfectly competitive market, firms will maximize their accounting accounting profits when marginal cost = marginal revenue. In this case, Jennifer's marginal cost is higher than her marginal revenue, therefore she should cut back on her production until her marginal cost decreases to $110 per batch of cookies.
Another characteristic of a perfectly competitive market is that both suppliers and consumers are price takers, so they must buy and sell at the market price. So instead of producing 110 batches of cookies, Jennifer should only produce 109, 108 ... or the number where her marginal cost is $110.