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mr. cramer runs on a treadmill 4 days per week for 1.5 hours per day. he rides a bike on the other 3 days for 1.5 hours per day. how many hours per week does mr. cramer exercise?

Find two rational expressions that have the difference of 2-n/n-4

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.