Find the 12th term of the arithmetic sequence x - 8, -4x - 15, -9x - 22, Please help meee

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

Choose the more precise measurement. 26.4 cm or 8.39 cm

Bring the fraction a/a-4 to a denominator of 16-a^2