<span>2r ≤ 3(2r - 7)
</span><span>2r ≤ 6r - 21
</span><span>21 ≤ 6r - 2r
</span><span>21 ≤ 4r
</span><span>21/4 ≤ r
r</span>

 21/4
r 

 5.25
 
        
        
        
21\25
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Answer:
option D
Step-by-step explanation:

equation 2:

so we have:

 
        
             
        
        
        
Answer:
B. 21x + 40 ≤ 124
Step-by-step Explanation:
Maximum amount budgeted = $124 (this means they can't spend more than this)
x = number of people
Cost per head = $21
Given that Mr Walter already spent $40, which is part of the money budgeted, the number of people that can go canoeing cam be expressed with the following inequality:
21x + 40 ≤ 124 
(note: the amount total to be spent will either be equal to or greater than $124, because it's the maximum amount budgeted for spending).
 
        
             
        
        
        
0.25 is 1/4 if that's what youre asking, i'm not sure,