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

Drag and drop the answers into the boxes to complete this informal argument explaining how to derive the formula for the volume of a cone. since the volume of a cone is part of the volume of a cylinder with the same base and height, find the volume of a cylinder first. the base of a cylinder is a circle. the area of the base of a cylinder is , where r represents the radius. the volume of a cylinder can be described as slices of the base stacked upon each other. so, the volume of the cylinder can be found by multiplying the area of the circle by the height h of the cylinder. the volume of a cone is of the volume of a cylinder. therefore, the formula for the volume of a cone is 1/3 1/2 1/3πr^2h 1/2πr^2h πr^2h πr^2

I’m stuck on this equation, anyone got the answer?

The coordinate grid shows a pentagon. the pentagon is translated 3 units to the right and 5 units up to create a new pentagon. what is the rule for the location of the new pentagon?