Ron is flying a hot air balloon at an altitude of 570 meters. He releases air from the balloon in order to change the altitude by -2.5 meters every second for 4 seconds. 1a. Write an equation and solve to find the change in altitude. 1b. Write an equation and solve to find the new altitude.

With alll of except for the 2 that i did already

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)

3x = 729 solve for x plz . it's urgent. will mark