Answer:
It's an arithmetic sequence. Instead of multiplying, you're adding 13. The answer is Tn=13n+25
Step-by-step explanation:
If you minus 38 from 51 (51-38), you get 13 and this 13 is constant throughout.
It's the same if you do (64-51).
Therefore 13 is our difference, we call it d.
Next you use the formula Tn=a+(n-1)d and substitute.
a is the first term of our sequence therefore it's a=38 and d=13.
We don't know n which is the number of terms.
When we sub its gonna be Tn=38+(n-1)(13)
And then you solve.
