Number 20, please. I need the response for 20 b and 20 c.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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

Give all possible names for the line shown.calculation tip: lines can be written with either point first.