Answer:
90
Step-by-step explanation:
To find s4 we find sum of values when n=1,n=2,n=3,n=4
given expression is 
n=1 , plug in 1 for n

n=2

n=3

n=4

Sum of all 4 terms = 6+12+24+48=90
Answer:
This question does not make since.
Step-by-step explanation:
Answer:
( A . ans )expressions that work the same even though they look different.
Answer:
Thanks
Step-by-step explanation:
U great
Answer:
The graph should look almost exactly like this. I used a virtual graphing chart to assist, since it is capable of showing more than paper alone.