Answer: x=3
Step-by-step explanation: Subtract 6 from both sides, Simplify  
15−6 to 9, and then divide both sides by three. 
3x=15−6
3x=9
x=9/3
x=3
Hope this helps, have a BLESSED day! ☺️
 
        
                    
             
        
        
        
Answer:
81.6
Step-by-step explanation:
mean/average of her grade = sum of all scores/the number of scores
= (93+82+74+92+67)/5
= 81.6
 
        
             
        
        
        
(0,3.75)(15,0)
slope(m) = (0 - 3.75) / (15 - 0) = -3.75/15 = - 0.25 or -1/4
y = mx + b
slope(m) = -1/4
(15,0)...x = 15 and y = 0
now we sub
0 = -1/4(15) + b
0 = -15/4 + b
15/4 = b
y = -1/4x + 15/4
1/4x + y = 15/4....multiply by 4
x + 4y = 15.....and since it is a solid line, it contains an equal sign...and since it is shaded above the line, it is greater.
so ur inequality is : x + 4y > = 15 (thats greater then or equal)
        
                    
             
        
        
        
10 degrees less then 6 degrees C is -4 degrees C