If you had a rectangular sheet cake do you need to cut into 15 pieces how many pieces would have to be on each side to achieve that many servings out of the whole cake

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

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12