
//Add 6 to both sides:

//Multiply by -1 on both sides:

Multiply by 3 on both sides:

Divide by 4 on both sides:

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Answer: x = 15 (Answer C)-----------------------------------------
Image is too blurry to solve
Answer:
20x^2
Step-by-step explanation:

Answer: 83.6
Step-by-step explanation:
The data shown below is: 81,83,84,85,85. The mean of this data set can be calculated via (81+83+84+85+85)/5=83.6
Hope it helps <3
P.S. brainliest brains?