A(5,1)B(x,7) C(8,2) are three points such that AB=2AC find all values of x

What ia the sum if the first 7 terms of the geometric series

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your