The variable y varies directly as x, and y = 84
when
x = 63.
Write the equation that expresses the relationship between the variables. (Let k represent the variation constant.)
y =

Using the given data, solve for the variation constant k.
k =

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