Answer:
Look at Step by Step
Step-by-step explaination
All you need to do is find the frequency of the test scores. 
70 = 2 dots
75 = 0
80 = 3 dots because there are 3 students that got a 80 %
85 = 3 dots because there are 3 students that got a 80 %
90 = 4 dots because there are 4 students that got a 90 %
95 = 3 dots
100+ = 0 dots
 
        
             
        
        
        
Answer:
55
Step-by-step explanation:
The absolute value of -30 is 30 and the absolute value of 25 is 25.
So you will end up with 30 + 25 which is 55.
 
        
             
        
        
        
Answer:
-52, and the opposite of this is 52.
Step-by-step explanation:
If we are losing 52 pounds, then our number is -52 since we are losing 52 pounds (adding a negative number to a positive number is the same as subtracting that number).
The opposite of a number is when we negate the number, or multiply it by -1. 
A negative number times a negative number is a positive number.

Hope this helped!
 
        
                    
             
        
        
        
Step-by-step explanation:

Replace x and y.

Solve for y.

Square both sides.


This is the inverse function or you can also say

 
        
             
        
        
        
-5 because the variable is x and a coefficient comes before the variable. 
 Hope this helps!