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