Question: Figure 1 Data from https://www.esrl.noaa.gov/gmd/ccgg/trends_ch4/with a fitted curve. Answer the following questions using the fitted curve y=1563.46410202131+22.86682158665x0.89679836582x^2+0.01315317092x^3 that is represented in Figure 1. According to

Figure 1 Data from https://www.esrl.noaa.gov/gmd/ccgg/trends_ch4/with a fitted curve. Answer the following questions using the fitted curve y=1563.46410202131+22.86682158665x0.89679836582x^2+0.01315317092x^3 that is represented in Figure 1. According to the SIMPLIFIED model y=1563+23x0.9x2+0.013x3, where x is the number of years after 1980 and y is the methane level in parts per billion (ppb), what were methane levels (in ppb) in 1990

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