Which of the following are examples of exponential decay?

The population of a Florida is increasing by 43% each year.
The pesticide DDT has a half-life of 15 years.
March Madness has 64 teams in the bracket. Each round, half the teams are eliminated.
After an antibiotic is added to a culture of bacteria, the number of bacteria is reduced by half every three hours.
A tree frog population doubles every three weeks. btw this for algebra 1 they didnt have a subject for it

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

54.864 meters

step-by-step explanation:

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

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step-by-step explanation: