A book is marked down by 28% from the original price of 19.50 what is the new price

Write the equation in logarithmic form m^x=n

What is the rate for one gallon of gasoline

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