Need asap!

1. add or subtract. show all work.

(7x^2+4x--3x+15)

2. multiply. show all work.

(5x-1)(6x^2+3x+7)

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)

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Write each rational number in the form a/b, where a and b are integers. 1. 5 1/6 2. -12