He will spend at least $27. He has already spent $16
27-16=11
So, Henry will spend at least 11 more dollars 
C ≥ 11
        
             
        
        
        
Factors are the numbers you multiply together to get given number.
All possible factorizations of number 18 by two factors are:
- 18=1·18;
- 18=2·9;
- 18=3·6.
Answer: 1 and 18, 2 and 9, 3 and 6.
 
        
                    
             
        
        
        
Because t is the number of weeks, replace t with 6 in the equation and solve for s.
s = -0.25(6) +4
s = -1.5 +4
s = 2.5 
 Now replace t with multiples of 6, use 12 and 18:
s =-.25(12) +4 = 1
s-0.25(18) +4 = -0.5
now fins the difference between the time frames:
2.5 - 1 = 1.5
1 - 0.5 = 1.5
The ice melts 1.5 meters every 6 weeks.
 
        
             
        
        
        
Answer:
[ - 6 , 6 ]
Step-by-step explanation:
This is because the value of f(t) for x values only ranges from -6 to 6.
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For more questions or more information, please comment below!
 
        
             
        
        
        
Step-by-step explanation:
if you use the online graphing calculator it will help you