CAN someone help me PLZ

Find the rate change of rom 2008 to 2016?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle