HELP ASAP PLS Which situations can be represented by an exponential function?

Select each correct answer.

An event organizer finds each year's attendance for the past five years is about 4/5 of the previous year's attendance.

A toad population is increasing by about 7.5% each year.

Shu Fang has $25.75 deducted from her checking account every month.

On the highway, Kareem's car gets 38 mpg.