For the arithmetic sequence with a1=2a_1 = 2 and d=4d = 4, compute a20a_{20}.

Arithmetic Sequences

13. Sequences, Series, and the Binomial Theorem / Arithmetic Sequences / Problem 3

Problem 3

For the arithmetic sequence with $a sub 1 equals 2$ and $d equals 4$ , compute $a sub 20$ .

$76$

$68$

$82$

$78$