Tia used the scale 1 in=8 ft
because 

=8 and 

 is also equal to 8.
 
        
        
        
Answer:  The cost of one bag of chips is $1.5 and cost of one bag of pretzels is $1.05.
Step-by-step explanation:
Let x= Cost of one bag of chips
y= Cost of one bag of pretzels.
As per given, we have
5x+9y=16.95        ...(i)
x+y=2.55            ...(ii)
Multiply 5 to (ii), we get
5x+5y=12.75     ...(iii)
Eliminate (iii) from (i), we get

Put value of y in (ii), we get

Hence, the cost of one bag of chips is $1.5 and cost of one bag of pretzels is $1.05.
 
        
             
        
        
        
The answer is a=9 because 14 minus 5 equals 9.
        
                    
             
        
        
        
Answer:
Angle DOC
Step-by-step explanation:
Since angle AOC and angle DOC are ajacent angles that form a straight line, they are supplementary to each other.
By the definition of supplementary angles, you can determine that angle AOC + angle DOC = 180.
Also notice that angle DOC is a right angle (90 degrees), so you can also determine that angle AOC is also a right angle since they are supplementary.