Use the following dot plot to answer the questions. What is the mean of the set?

If an additional dot is added to the set in the 3 column, how will the mean change? What will the new mean be?

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

idk

step-by-step explanation:

b

step-by-step explanation:

this is because the profit is decreasing and turning into debt