In Yellowstone National Park there are 300 species of birds that migrate. This accounts for 2/7 of all the species of birds sighted in the park. Write an equation to find the number of species of birds that have been sighted in Yellowstone National Park.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?