What is 78/100 simplified to its smallest form

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?

Which best describes a central bank's primary goals? limiting inflation and reducing unemployment reducing unemployment and maintaining cash flow controlling stagflation and reducing unemployment managing credit and ensuring the money supply's liquidity