Question

30. -3,-1, 1, 3, 5, ...

I need this to know if this is arithmetic-geometric or Keith please give the value of d or r

Answer 1

Explanation:

-3 → -1 → 1 → 3 → 5 → 7 → 9 → etc

+2 +2 +2 +2 +2 +2

By using function :

U1 = -3

U2 = -1

b = -1 - (-3)

b = -1 + 3

b = 2

Un = a + (n - 1)b

Un = -3 + (n - 1)2

Un = -3 + 2n - 2

Un = 2n - 5

Find U6!!

U6 = 2(6) - 5

U6 = 12 - 5

U6 = 7