Answer:
I think you meant 40% off. If so...
Step-by-step explanation:
First, you have to turn 40 into a decimal - .40. 
Then you multiply 30*.40 and get 12.
Subtract 12 from 30 since you are saving 12 dollars. 
This means you spend $18 and saved $12. 
So, your final answer would be $12.
Hope this helps :)
 
        
                    
             
        
        
        
Answer:
the images not loading so can you please upload it again
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: (-2, 2) and (4, 8)
There are two solutions because the two functions cross each other twice.
        
             
        
        
        
Answer:
A = 48, and B = 52
Step-by-step explanation:
Simplify 8 = 2 hours to 4 = 1 hour, then multiply 4 times 12 to get the answer to a. The answer to b would be multiplying 4 times 13.
 
        
             
        
        
        
The first thing we must do for this case is to observe the value of the y coordinate for a given value of the x coordinate.
 We have then:
 f (x) = - 4: occurs when x = 0 
 On the other hand, for x = 2 we have:
 f (2) = - 2
 Answer:
 f (x) = - 4: occurs when x = 0
 f (2) = - 2