Mazer Inc., a publication house, allows its employees to try out a variety of profiles, ranging from editing to designing cover pages. The practice at Mazer best exemplifies:

The correct answer is:   6.99 billion (as 6.986 billion is rounded off (to nearest hundredth place)  to 6.99 billion)explanation: the given function is:   y = 6.2(1.01)^x (1)where x =    number of years after 2000it means that in 2012, the value of x would be 12 as the difference between 2012 and 2000 is 12 years.put x = 12 in equation (1): (1) => y =  6.2(1.01)^12 = 6.986 billion = 6.99 billion

Combining the emissions released by fossil fuel burning and  the carbon released via land use change, we get a total of 8.7 gt. since the problem states that the oceans "take up" or sequester  2.4 gt carbon  per year, we subtract that value from 8.7 gt, leaving us with 6.3 gt of carbon. since the problem states that 3.4 gt carbon dioxide emissions end up in the atmosphere, the "missing sink" of carbon takes up 2.9 gt, a value we got by subtracting the 3.4 gt amount recorded from the 6.3 gt carbon left available after the oceans sequester the carbon dioxide.