Ellie has to read a certain amount for her ELA class every week. Each week she reads 4 chapters of her book and 15 pages from a magazine. After 3 weeks she has read 111 pages. How many pages were in each chapter?

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

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

What line represents the relationship between r and s