The answer is a(n) = 6n - 2
I do not have an answer for that, but you should try looking for that on google or yahoo answers.
Answer:
It's C) 53
Step-by-step explanation:
All of these points have the same y coordinate so this is a horizontal line which has a slope of 0.
Answer:
about 70 years
Step-by-step explanation:
Life expectancy (e) improves by 5.7 years every 10 years, so 5.7/10 = 0.57 years per year. For t years after 2009, it can be modeled by ...
e = 0.57t +80
We want to find when that is 120:
120 = 0.57t +80
40 = 0.57t
40/0.57 = t ≈ 70.2
About 70 years from 2009, humanity may achieve a life expectancy of 120 years.