Gina pumps 40 cubic inches of air per second into a balloon. The function below shows the total amount of air f(t) inside the balloon after t seconds.
f(w) = 40t + 5

Which statement best describes the y-intercept of the graph of the function?

Question

Gina pumps 40 cubic inches of air per second into a balloon. The function below shows the total amount of air f(t) inside the balloon after t seconds.
f(w) = 40t + 5

Which statement best describes the y-intercept of the graph of the function?

anonymous · Answer

It is equal to 40 and represents the amount of air already present in the balloon before Gina starts blowing. 
 It is equal to 5 and represents the amount of air already present in the balloon before Gina starts blowing. 
 It is equal to 5 and represents the amount of air in the balloon after 1 second. 
 It is equal to 45 and represents the amount of air in the balloon after 1 second.

anonymous · Answer

It is equal to 40 and represents the amount of air already present in the balloon before Gina starts blowing.

anonymous · Answer

Thank you :)