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.

Answer 1

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.

Answer 2

@berrypicking Questions?

Answer 3

i should have said values from 0 to 8 seconds

Answer 4

How did you come up with 0 to 8 seconds?

Answer 5

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

Answer 6

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