What is the image of (3, 6) when it is translated along the horizontal vector -2,0?

Which expression is equivalent to? assume x > 0 and y > 0.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

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