I would really appreciate it if someone helped me with this precalculus problem:

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?