Circumference= 15.71 feet squared
        
             
        
        
        
Answer:
280 hours
Step-by-step explanation:
Amount paid + profit = cost of a lesson per hour 
 $2000   + $5000 = $25(h)
7000 = 25h
7000/25 = h
    280 = h
 
        
             
        
        
        
It is B, the coefficient of the x-term.  When you multiply this out, you get x*x+x*q+x*p+p*q, or x^2+x(p+q)+p*q
Notice how the x term is multiplied by p+q.
Hope this helps!