On December 28, 2018, Tristar Communications sold 18 units of its new satellite uplink system to various customers for $25,000 each. The terms of each sale were 2/10, n/30. Tristar uses the net method to account for sales discounts. n what year will income before tax be affected by discounts, assuming that all customers paid the net-of-discount amount on January 6, 2019? By how much? In 2018 , income before tax will be reduced by