Which of the following expressions is in simplified form?

1 1/2n + 2.9n
4w - 5
-2 + 1.4m + 0.5
9j - 3 - j

How do i do this activity, is appreciated

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Questions 7-8. use the following table to answer. year 2006 2007 2008 2009 2010 2011 2012 2013 cpi 201.6 207.342 215.303 214.537 218.056 224.939 229.594 232.957 7. suppose you bought a house in 2006 for $120,000. use the table above to calculate the 2013 value adjusted for inflation. (round to the nearest whole number) 8. suppose you bought a house in 2013 for $90,000. use the table above to calculate the 2006 value adjusted for inflation. (round to the nearest whole number)