A bus travels 80 KM North in two hours of time what is its average velocity? A-- 80km/hr north B--40 km/hr north C--80 km/ hr south D-- 25 km /hr south

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

What term makes it inconsistent y=2x - 4

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?