Question

Find the first four terms of the arithmetic sequence
where a1 = 2 and d = 5 (use formula)

Answer 1

Answer:

first four terms are 2, 7, 12, 17

Step-by-step explanation:

use this formula:  $a_{n}$ = $a_{1}$ + (n - 1)· d

where 'n' equals the position in the sequence the term is in and 'd' is the common difference

if $a_{1}$ = 2 and d = 5 are given, plug those into formula

$a_{1}$ = 2

$a_{2}$ = 2 + (2 - 1)·5 = 2+5 = 7

$a_{3}$ = 2 + (3 - 1)·5 = 2+2(5) = 12

$a_{4}$ = 2+(4 - 1)·5 = 2+3(5) = 17