6p=13.50
there are 6 notebooks and it costs $13.50 altogether. P represents the cost of one notebook, therefore the equation would be 6p=13.5. It can be rearranged to p=13.5/6
60 degrees, hope this helps
Only if the one side is between the two angles. If not, then we can't say. Maybe the rest are, and maybe they're not.
Area of the big rectangle : 60 ! area of entire figure : 80 !