Question

write down in terms of n an expression of the following sequences
a) 12 10 8 6 4
b) 25 20 15 10 5​

Answer 1

Answer:

$-2n+14$

$-5n+30$

Step-by-step explanation:

-2 difference.

$u_{n} =-2n+c$

$u_{1} =-2(1)+c=12$

$c=14$

-5 difference.

$u_{n} =-5n+c$

$u_{1} =-5(1)+c=25$

$c=30$