I've got it down to m+n=m*n but that doesn't seem to help.  I'm still working
        
             
        
        
        
Answer:
18 sq. units
Step-by-step explanation:
Height would be 6 and Length would be 3
6 x 3 = 18
For further help, use a coordinate grid and plot the points
 
        
                    
             
        
        
        
Answer:
∡PQS = 35+14=49
Step-by-step explanation:
 
        
             
        
        
        
Answer:
 16 people
Step-by-step explanation:
35.75 times 16 is 572, times 17 is 607.75, he only has 600 and he cant have a fraction of a person, so he can have 16 people 
 
        
                    
             
        
        
        
Answer:
A and B
Step-by-step explanation:
Parallel lines are lines which have the same slope. Perpendicular lines have negative reciprocal slopes.
For the options:
A. Both equations have 7/5 as the slope. They are parallel.
B. The slopes are 1 and -1. These are perpendicular.
C. The slopes are 9/2 and are parallel.
D. The slopes are 7/3 and -3/7. They are perpendicular.
The solution is A and B.