There are 5 bacteria in a petri dish at the start of an experiment. this type of bacteria doubles every 20 minutes.

find the number of bacteria after 4 hours.

40

10,240

20,480

40,960

20480

Step-by-step explanation:

4hr = 12 doubles

5 * 2 ^ 12 = 20480

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

greater than one

step-by-step explanation: