What is the perimeter of a regular octagon if each it's each side is 'a' units? (a) a units
(b) 8 a cm
(c) 8 a units
(d) 64 units

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-responsequestion. there are 15 questions on the test and the students have been given 55 minutes to complete itwhich value could replace x in the table? 5507-m23-m8(15-m)8(15)-m

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”?

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?