Answer:
Step-by-step explanation:
Depends on what kind of rotation you would be doing. But for example, if you are rotating 90 degrees about a point on a graph, your point (x, y) changes to (-y, x). Then another 90 degrees would be (-x, -y). 
 
        
             
        
        
        
Answer:
330
Step-by-step explanation:
 
        
             
        
        
        
Answer: d. (if a polygon has congruent angles, then it is regular)
Step-by-step explanation:
Converses follow the format of "if q, then p" (while  the original conditional is "if p, then q")
Just because there are clouds does not mean its raining (cloudy days)
just because it has four equal sides does not make it a square (rhombi have four equal sides but are not squares)
just because you cannot see the sun does not mean it is not daytime (solar eclipses)
if a polygon is regular, it must have congruent angles
 
        
             
        
        
        
Answer:
82.125
 ≈82.12 ( am not sure if it need to be estimated )
Step-by-step explanation:
1 hr -> 10.95
30m-> 5.475 
10.95x7=76.65
76.65+5.475=82.125
                     ≈82.12 ( am not sure if it need to be estimated )
 
        
             
        
        
        
It will be b because you will have to time $3.50P140= 490