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Answer: C.) 111 Only
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
If Elena walk 12 miles, and then 0.25 that distance
0.25=1/4
12*1/4=3 miles is 1/4 of the distance
she walked in total 12+3=15 miles
choice A =12+12*1/4
 
        
             
        
        
        
Answer:
y = -(1/2)x + 4
Step-by-step explanation:
Use the standard form on an equation:  y = mx + b
A line that is perpendicular has a slope that is the opposite reciprocal of the other line.  We also have a point (x, y) that is on the line, so our equation begins as..
1 = -(1/2)(6) + b           We must solve for b (  -1/2 is the opposite reciprocal of 2)
1 = -3 + b
4 = b  
so our equation is 
y = -(1/2)x + 4