Can u answer this?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.