A teacher's initial pay is K850 per fortnight, increasing by K120 per fortnight each year. Calculate his pay for the first 5 years, in Year 10, and when it first exceeds K1500.

For Year 1 ($n=1$): $T_1 = 850 + (1-1)120 = 850 + 0 = 850$
For Year 2 ($n=2$): $T_2 = 850 + (2-1)120 = 850 + 120 = 970$
For Year 3 ($n=3$): $T_3 = 850 + (3-1)120 = 850 + 2(120) = 850 + 240 = 1090$
For Year 4 ($n=4$): $T_4 = 850 + (4-1)120 = 850 + 3(120) = 850 + 360 = 1210$
For Year 5 ($n=5$): $T_5 = 850 + (5-1)120 = 850 + 4(120) = 850 + 480 = 1330$
Answer: $\boxed{K850, K970, K1090, K1210, K1330}$

Answer: $\boxed{K1930}$

is 7.
Answer: $\boxed{\text{Year 7}}$