Agh! Somebody PLEASE help!!!!

Joshua is creating a series of rectangles, one inside the other. The length of the first rectangle, Rectangle A, is five inches. Joshua dilates Rectangle A about its center by a scale factor of two to get Rectangle B. He repeats this process using the same scale factor till he gets a rectangle of length 80 inches.

How many dilations did Joshua perform including the dilation of Rectangle A?

Question

Agh! Somebody PLEASE help!!!! 


Joshua is creating a series of rectangles, one inside the other. The length of the first rectangle, Rectangle A, is five inches. Joshua dilates Rectangle A about its center by a scale factor of two to get Rectangle B. He repeats this process using the same scale factor till he gets a rectangle of length 80 inches.
 
How many dilations did Joshua perform including the dilation of Rectangle A?

anonymous · Answer

Well, first off, what will be the length of rectangle B?

anonymous · Answer

10?

anonymous · Answer

Yeah, should be (unless I'm missing something)|dw:1343835098119:dw|