Answer:
4h+.07s
Step-by-step explanation:
four dollars per hour plus 7 percent of her sales
 
        
             
        
        
        
Answer:
He simplified the x coefficients incorrectly
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
For the first one:
D) The perpendicular bisector of line MN
For the second one:
You need a protractor (angle ruler) to measure the angle. After finding the measurement, divide it into two. After finding the result, find the point that has that angle.
Example - 
The pie measures 120°. 
120° ÷ 2 = 60°
Find the point that measures 60° and connect the points (from the start to the edge of the pie).
For the third one:
C) m∠ABD ≅ m∠CBD
 
        
                    
             
        
        
        
.70 * x = 9.1
.70/.70 * x = 9.1/.70
x = 13
        
             
        
        
        
I would say it represents the volume function evaluated at r=5/7, or
V(5/7)=(4/3)π(5/7)² = 2.13714