Find the unit rate. Round to the nearest hundredth if necessary.
128 pounds of dog food for 16 dogs
(10 Points)

2,048 pounds per dog

0.125 pounds per dog

21.3 pounds per dog

8 pounds per dog

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

How to do this , and can some one explain

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.