Week 1 – My Arithmetic Sequence

6, 10, 14, 18, 22…

How to find the 50th term, t_{50}:

t_n=t_1+(n-1)d

t_{50}=6+(50-1)(4)

t_{50}=202

How to find the sum of the first 50 terms, S_{50}:

S_n=\frac{n}{2}(t_1+t_n)

S_{50}=\frac{50}{2}(6+202)

S_{50}=5200

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