Aschool has 70 sixth graders, 65 seventh graders, and 75 eighth graders. in each grade, 20% of the students live within 1 mile of school.
what is the total number of students that live more than 1 mile from school?

a. 42

b. 168

c. 190

d. 210

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

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

Factor and solve to find roots x squared -x - 90 =0