Answer:
dont know
Step-by-step explanation:
Answer: (-2,1)
Read it lije (x,y)
2(6.3) + b = 15.7
12.6 + b = 15.7
b = 3.1
P(A and B) = 0.2
P(A and B) = P(A) * P(B) = 0.5 * 0.4 = 0.2