Pete is saving up for a bike and knows he'll need to spend at least $220 to get the one he wants. he saves $45 each month. how long will he need to save before he can go bike shopping?

Plz will give brainliest

Which rational number could be graphed between -4 and -5

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