Answer:
b)
Step-by-step explanation:
n²+n-42=0
Using mid-term break
n²+7n-6n-42=0
n(n+7)-6(n+7)=0
(n-6)(n+7)=0
Either,
n-6=0 OR n+7=0
n=6 OR n= -7
14/20 = 7/10 = .7
its c
u knwo why :)
Answer: This is an easy one, its either 21, 21 and a half, or 22, if not than its at least in the 20s.
