B the answer is b because yiu do like add e square 27 +* 9 + x = 8 -/273/73
They always say to do the problem in parentheses first
Answer: -9
Step-by-step explanation:
The probability that none of the four have been vaccinated is
(1-0.63)^4 = 0.01874161
The probability that at least one has been vaccinated is the complement of this,
≈0.9813