so, as you can see above, the common ratio r = 1/2, now, what term is +4 anyway?
so is the 8th term, then, let's find the Sum of the first 8 terms.
Answer:
18
Step-by-step explanation:
16 × 9 = 8 × x
x = 18
y=x+3
Sry, Can't help.
It's soo hard!!