The fair market rental rate for Lafayette was $770 in 2009 and $661 in 2005. Find the unit rate of change for rent in Lafayette during this period.
(Express your answer rounded correctly to the nearest cent!)

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

If the value of cos330°is√3/2 then find cos 165°.

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.