(1) To record the purchase using the net method, Meteor Co. would recognize the net amount due after applying the cash discount. The net amount is calculated as follows:

Net Amount = Gross Amount - Cash Discount Net Amount = $30,000 - (2% of $30,000) Net Amount = $30,000 - $600 Net Amount = $29,400

The journal entry to record the purchase would be:

借：库存商品 29,400 贷：应付账款 - Supplier 29,400

(2) If the entire invoice is paid on March 11, 2018, within the discount period, Meteor Co. would receive the 2% cash discount. The journal entry to record the payment would be:

借：应付账款 - Supplier 29,400 贷：银行存款 29,400

(3) If the entire invoice is paid on April 2, 2018, after the discount period, Meteor Co. would pay the full amount without the discount. The journal entry to record the payment would be:

借：应付账款 - Supplier 30,000 贷：银行存款 30,000

In both payment scenarios, the cash discount is considered when determining the amount paid, reflecting the net method of accounting for purchases.