Which explicit and recursive formulas match the geometric sequence 5; 100; 2,000; 40.000; ?

If square root x = -7, then x= -49 true or false

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Solve the system of equations y= 3/2 - 1, -x+ y =-3