Question

time (secs) | bacteria
0 | 192
1 | 96
2 | 48
3 | 24
4 | 12


Write an equation or function that models the number of bacteria, y, in terms of time, x.

(1 point)

Answer 1

y = 192*(1/2)^x

Explanation: the bacteria halve each second, so multiply by 1/2 for each unit increase in x (equivalently y = 192·2^(−x)).