I need a lot of help, please! ):

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re

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