The amount y (in billions of dollars) of income taken in by a certain country's social security administration for old-age and survivor's insurance in year x can be approximated by the equation below. 111.7(x - 2010) = 7y - 3742.22 Assuming the trend continues, find the year in which 773.96 billion dollars will be taken in. What is the value of y? y=1 (Type an integer or a decimal. Do not include the $ symbol in your answer.)