Answer:
-10
Step-by-step explanation:
-7+(-3)= -7-3
 = -(7+3)
 = -10
Side note: Do you not have a caculator?
 
        
             
        
        
        
Edit: 33% is not 

, therefore my solution is wrong. The correct answer is 0.33 x 496, which is $163.68
The following is the original solution, which is incorrect. 
33% = 

. Multiply the bonus of $496 by 

 to get the solution of 

, or 165 and 

Therefore the solution is $165.33
 
        
        
        
The equation you want to use is this:
10x = 530                             10 pages for x days
x = 530/10                            530 pages divided by 10 pages
So the answer is,
53 days
        
                    
             
        
        
        
Circumference = 2Pi(r) = 6Pi
angle of arc s = 360 - 106 = 254 degree
Arc length = 6Pi ( 254 ) / 360 = 4.2Pi
Pi = 3.14