Answer :
Month 1: $135
Month 2: $135 + $15 = $150
Month 3: $150 + $15 = $165
Month 12: $120 + 12 * $15 = $120 + $180 = $300
Answer: Jason had $300 in his account at the end of the year.
Month 2: $135 + $15 = $150
Month 3: $150 + $15 = $165
Month 12: $120 + 12 * $15 = $120 + $180 = $300
Answer: Jason had $300 in his account at the end of the year.