Domain, range?

[moonshine]

Anton bikes a distance of 50 km at a constant speed of 25km/h

What is the domain?
What is the range?

The Right answers is going to be:
domain: 0 ≤ t ≤ 2
range: 0 ≤ s (t) < 50

I cant get those answers!! it would be sooo nice if someone could help me

 

[stapel]

Anton bikes a distance of 50 km at a constant speed of 25km/h

What is the domain?
What is the range?

What is the domain of what? What is the range of what? Are you supposed to create some sort of equation, perhaps based on, or related to, the statement about Anton?

When you reply, please show what you've tried so far. Thank you!

 

[moonshine]

Decide the functions domain and range if Anton just have access to one jar off coulor.

 

[moonshine]

<sup>Sorry for that answer above i looked at another question, dont mind it! xD

No but i dont know where to start actually... im totally lost...</sup>

 

[stapel]

We can't help you find the answer until we know what the actual question is. What is the full and exact text of the exercise and its instructions?

 

[DrPhil]

What is the domain of what? What is the range of what? Are you supposed to create some sort of equation, perhaps based on, or related to, the statement about Anton?

When you reply, please show what you've tried so far. Thank you!

A very incompletely stated problem. First you have to "know" the independent variable. If nothing in previous examples or problems tells you, at least the "Right answer" shows you explicitly that the domain is going to be time, \(\displaystyle t\).

Anton starts at \(\displaystyle t=0\), and rides for 2 hours. If he does not exist unless he is riding, then the domain of \(\displaystyle t\) that has relevance to "Where is Anton?" is \(\displaystyle 0 \le t \le 2\) hours.

The "Right answer" for the range shows that the variable \(\displaystyle s\) is being used for the position of Anton. He started "here" at \(\displaystyle t=0\), and he ended 50 km away. Never backed up, never got any farther. Doesn't exist outside the domain of \(\displaystyle t\).