Answer:
-7
Step-by-step explanation:

The length of would be 9 and the width 7, resulting in an area of 63
Answer:
-8
Step-by-step explanation:
Answer:
1/5688x-18
I am not sure about my answer because I think the question is missing some information but my answer is 1/5688x-18. Thanks!
N-1(-1/2) is the formula because the sequence is taking half of the previous number and changing its sign