Answer: 6
Step-by-step explanation: If you pay 3 dollars, and it is 50% off, you would multiply 3 by 2 to get 6.
Answer:
X=-1, y=4
Step-by-step explanation:

by using eliminating property

by substitution
X=-1
The probability of multiple events happening is calculated by multiplying the probabilities of each event together. This is the case if each event is independent of the other events.
For a fair coin, the probability of tails is 1/ 2 or 0.5, so the probability of all tails in 10 tosess is (1/2)^10 = 1/1024 = 0.0009765625
Correct answer: D