Which situations are best modeled by an exponential relationship? Select all that apply. A A tree frog population in a national forest doubles every three weeks. A tree frog population in a national forest doubles every three weeks.

B Every year, attendance at an amusement park increases in spring and decreases in autumn. Every year, attendance at an amusement park increases in spring and decreases in autumn.

C The total amount of emails if every person that receives an email forwards the email to five friends. The total amount of emails if every person that receives an email forwards the email to five friends.

D A district-wide basketball tournament eliminates 50% of the participant teams after each game. A district-wide basketball tournament eliminates 50% of the participant teams after each game.

E A ball is thrown straight up from shoulder height with a velocity of 14 m/s, and then falls to the ground. A ball is thrown straight up from shoulder height with a velocity of 14 m/s, and then falls to the ground.

F A savings account earns 7.5% interest every month for the first 12 months, and then no longer earns interes