Question

ill medal and fan ..
What is the explicit formula for the following sequence:
-4, -1, 2, 5...?


A(n) = -4 + (n - 1)(2)


A(n) = -4 + (n - 1)(3)


A(n) = 3 + (n - 1)(-4)


A(n) = 3(n - 1) + 5

Answer 1

wow this one is hard

Answer 2

i know 😒

Answer 3

sorry cant figure it out :(

Answer 4

thank you for trying .

Answer 5

@jim_thompson5910 @Nnesha @phi

Answer 6

looks like arithmetic
general equation is \[\huge\rm a_n =a_1 +(n-1)d\]
where a_1 = first term
d=common difference
n= term that we have to find
to find common difference subtract any term from the previous one
\[\large\rm \color{red}{d = a_2 - a_1 , a_4 -a_3 , a_3 - a_2}\]

Answer 7

Thank youu !

Answer 8

It is b right ?

Answer 9

idk you tell me is it b ;) why b ? \o^_^o/

Answer 10

why not A ?? ;)

Answer 11

because the difference is positive 3 right

Answer 12

:=) gO_Od job!
a_1 = first term which is -4 so yea