Find the least common denominator for these two rational expressions.

X/x^2-4

2x/x^2-8x+12

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?

Ok a point t on a segment with endpoints d(1, 4) and f(7, 1) partitions the segment in a 2: 1 ratio. find t. you must show all work to receive credit.