Rewrite the equation by completing the square x^2+16+63=0

How many lines can be drawn through points j and k? 0 1 2 3

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x