Hey there
The slopes of perpendicular lines are negative reciprocals. <span>Perpendicular lines have slopes that are </span>negative reciprocals<span> of each other.</span><span>
= (C) </span>
        
                    
             
        
        
        
Given:
Kelly purchased 5 containers of ice cream for a party.
Each container holds 8 cups of ice cream.
Her brother ate 2 cups of ice cream.
One serving of ice cream = 2/3 of a cup.
To find:
Number of servings of ice cream will be left for the party?
Solution:
We have,
1 container = 8 cups of ice cream
5 containers = 5×8 = 40 cups of ice cream
Her brother ate 2 cups of ice cream. So, remaining cups of ice cream is
 cups
 cups
Now,
 of a cup = 1 serving
 of a cup = 1 serving
1 cup =  serving
 serving
38 cup =  serving
 serving
             =  serving
 serving
             = 57 serving
Therefore, 57 servings of ice cream will be left for the party.
 
        
             
        
        
        
Answer: 25=29
Step-by-step explanation:5x5=25 
4x5+9=29
 
        
                    
             
        
        
        
I would feel better if you'd explain how you "know" that a "same-day" ticket is $15.  
"<span>The combined cost of one advance ticket and one same-day ticket is $35."  This would imply that the cost of one advance ticket is $(35-15), or $10.  
Check by substitution to determine whether $15 and $10 are correct.  If not, please show your work, so that someone else or I could step back in and help.
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