A function g(x) is used to model the height y of a ball x seconds after the ball is thrown in the air. Ball reaches maximum height of 7.5 feet in 5 seconds and then hits ground 3 seconds later. what would be an appropriate domain for g(x). Choices are 3

Question

A function g(x) is used to model the height y of a ball x seconds after the ball is thrown in the air. Ball reaches maximum height of 7.5 feet in 5 seconds and then hits ground 3 seconds later.  what would be an appropriate domain for g(x).  Choices are 3<=x<=5; -5<=x<=5;  0<=x<=8:  0<=x<=7.5  .  I believe it is the last choice.

cwrw238 · Answer

y is a function of x  so the values of x are the domain which has values of  0 seconds and 8 seconds.
the third choice is correct.

anonymous · Answer

@berrypicking Questions?

cwrw238 · Answer

i should have said values from 0 to 8 seconds

anonymous · Answer

How did you come up with 0 to 8 seconds?

anonymous · Answer

yes, now I see it.  simple once you point it out.  thanks

anonymous · Answer

I'm glad you see the way I do :D