After plotting the data where t represents the number of hours since time t=0, kieran used technology and determined the appropriate model to approximate the number of bacteria after t hours is f(t) = 5(4)t. use the model kieran created to predict the number of bacteria after 3 hours.
64
160
280
320

f(t) = 5(4)^t

f(3) = 5(4^3) = 5 * 64 = 320

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

ab will be equal to