Answer:
-14
Step-by-step explanation:
this is if you meant 2 + t + 2 * t^3-t
The first term is 42.
The common difference is 142 - 140 = 2 so we have
50th term = a1 + 2(50 -1) = 140 where a1 is the first term
a1 + 98 = 140
a1 = 140 - 98 = 42.
low,low
low, high
high,high
70
