Wednesday
April 23, 2014

Homework Help: Math

Posted by alice on Saturday, December 1, 2012 at 6:59pm.

Could someone explain how to solve this math problem?
I've graphed it, but I'm not sure how to solve the rest of the questions.

The National Oceanic and Atmospheric Administration (NOAA) has been measuring atmospheric
carbon dioxide concentations (in parts per million) at Mauna Loa, Hawaii since 1958. The data
closely follow the pattern H(t) = 0.013t2 + 0.81t + 316 + 3.5 sin 2πt, where t = 0 represents the
year 1960. (Complete dataset available at ftp://ftp.cmdl.noaa.gov/ccg/co2/trends/c

1. Explore the CO2 concentration model for the period 1960 1962.

a) Graph H for 0 ≤ t ≤ 3 and 300 ≤ H ≤ 340
b) Over the course of a single year, about how much does carbon dioxide concentration vary?
c) How much time is required for one complete cycle of carbon dioxide levels?
d) When during the year do the maximum and minimum occur?

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