What 0.5628 rounded to nearest hundred​

Which of the following points is collinear with (-2,1) and (0,3)

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?