Please help it needs me to find the volume but what is the height supposed to be?

Through non-collinear points there is exactly one plane.

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

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