Question

Identify the 31st term of an arithmetic sequence where a1 = 26 and a22 = -226

Answer 1

a22 = a1 +21d

plug in the values given to find the common difference d

then

a31 = a1 + 30d

Answer 2

so what is it

Answer 3

-334
-274
-284
-346

Answer 4

we r not here just to give you the answer but to show you how the get the answer

Answer 5

but it needs to be a negative and i dont know how to get the negative

Answer 6

a22 = -226 and a1 = 26
so
-226 = 26 + 21d

21d = -252

now divide both sides by 21 will give you d

Answer 7

-12

Answer 8

okay i got it

Answer 9

right now all you do is plug d = -12 into
a31 = 26 + 30* -12

Answer 10

well i've done it for you !

jsut use your calculator to work it out