5(x - 4) = 12 - 3x
5x - 20 = 12 - 3x
2x - 20 = 12
2x = -8
x = -4
Answer:

Step-by-step explanation:
Let the required probability be denoted by P(1A 2A 3B 4B).
This means a shopper chooses brand A first. Then by choosing brand A as the second purchase, the same brand is used. The third purchase is brand B; hence he switches brand. The fourth purchase is also brand B, maintaining the same brand as the third.
On the first purchase, the probabilities of A and B are both equal. Hence, each probability = 1/2


I am pretty sure that this is it
Answer:
6<x<8
Step-by-step explanation: