Posted by NEED ANSWER URGENT. ANON. on .
3. In Biology, it is found that the bacteria in a certain culture double every halfhour. If the initial number of bacteria in culture is 1000,
A. Find the defining equation for the number N of bacteria in culture after T hours, assuming that no bacteria die.
B. How many bacteria cells are present after 2 hours?

MATH :) 
Henry,
T = 0: N = 1000*2^0 = 1000.
T = 1/2hr: N = 1000*2^1 = 2000.
T = 1hr: N = 1000*2^2 = 4000.
NOTE: The exponent is always equal to
2T.
A. Eq: N = 1000*2^2T.
B. 2T = 2*2 = 4.
N = 1000*2^4 = 16000 Bacteria cells.