Question

Pls answerrrrr
with simple working

Answer 1

-137

Explanation:

The pattern is -8 every term so

15 + (-8(20-1)) = -137

its pretty much multiplying the rate by what term you want. you subtract the 1 because you started with the first term.

Answer 2

-137

Explanation:

23, 15, 7, -1, -9,-17...........

-8 -8 -8 -8.....

∴ -8n+23

if n = 20

-8(20)+23=-137