Answer:
134
Step-by-step explanation: 
She bought 8 bags with 16 each . 
So we get 8x16 , which gives us , 128 . 
She already had 6 cookies so we get our total from the ones she bought and add that to out initial value , 6 . 
128+6= 134 
In Conclusion Keisha has 134 cookies in all . 
- I really hope this helped , I'm terribly sorry if it didn't. :,)
Stay safe and have a wonderful day ! <3 
~Sleepy~