Choose the graph that represents the time for which the velocity of the ball will be between -90 and - 58ft / s

Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?

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

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?