91. Revenue The revenue R received by a company selling r pairs of sunglasses per week is given by
the function R(x) = -0.1.x2 + 70x.
(a) Find and interpret the values of R(17) and R(25).
(b) How many pairs of sunglasses must be
sold in order for revenue to be $10,000 per
week?
(c) How many pairs of sunglasses must be sold in
order for revenue to be $12,250 per week?

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)