Answer:

Step-by-step explanation:
Since question already gives the number of dollars she will tip, I'm assuming it's asking for percent tipped.
Because the total is $75 and Theresa is tipping $6, she is tipping  of the total. To convert this to a percentage, multiply by 100:
 of the total. To convert this to a percentage, multiply by 100: 
 
        
                    
             
        
        
        
Answer:
It doubled up is what you could say
 
        
             
        
        
        
-5=-2/9x. 
x=22.5 / x=45/2
        
                    
             
        
        
        
Answer:
f(x)=x^3+7
y=x^3+7
x=y^3+7
y^3=x-7
y=cube root (x-7)
f(x) inverse=cube root of x-7
Step-by-step explanation:
 
        
             
        
        
        
Answer:
   A- 12 percent
Step-by-step explanation:
You can see on the graph that the charged percentage of capacity changes from 40 to 50 in 5 minutes. Then the increase in 6 minutes will be slightly more than 10 percent. 
The linear rate is (10%)/(5 min) = 2%/min, so in 6 minutes it will be
   (2%/min)×(6 min) = 12%
This calculation is consistent with our observation from the graph.
Every 6 minutes, 12 percent is added to the capacity.