Which of the following pollygons cannot be used to form a regular tessellation

Draw the line of reflection that reflects △abc onto triangle δ a'b'c'

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

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?