Answer:
Four times his sister's age would be 4b.   his age is two years less, so we need to subtract 2.
put together, this is 4b - 2.
 
        
                    
             
        
        
        
Answer:
7.9
4.2
9.3
17.8
Step-by-step explanation:
8. √63
the square of 8 is 64 √63 is close to 64 so we can say it's 7.9 approximately
9. √18
the square of 4 is 16, √18 is greater than 16 so we can say it's 4.2 approximately
10. √87
the square of 9 is 81, √87 is greater than 81 so we can say the value of it is approximately 9.3
11. √319
the square of 18 is 324, √319 is smaller than 324 so we can say it's 17.8
 
        
             
        
        
        
Answer:
The y-intercept is 33ft. 
Step-by-step explanation:
The ball is 33 feet away from the wall. 
It will take the ball 11 seconds to touch the wall.
The slope is -3 feet. The ball is rolling towards the wall at 3 ft per second.
I hope this helps!
             ~Princess <3
 
        
             
        
        
        
Answer:
She will need 16 packages 
 
        
             
        
        
        
It's this graph. You didn't give me any options in the question.