The scale of a map is 1 in. : 500 miles. city a is 650 miles from city c how far is it’s dist on the map

What is x3+3x2−16x−48 divided by x−1?

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

Math i have no idea how to do a and b