Question

The graph shows the temperature of ice cream in an ice chest during an overnight trip. What is the domain of this function?

Answer 1

Domain is the set of x-values on a graph.
In the given graph,the values starts from zero and ends at 30.
Therefore,
The domain is all real numbers 0 through 30.

Answer 2

Let

x-------> the number of hours

y------> the temperature in degrees Fahrenheit

we know that

For $x=0\ hours$

$y=-10\°\ F$

For $x=30\ hours$

$y=30\°\ F$

The domain of the function is the interval----------> $[0,30]$

$0\ hours \leq x\leq 30\ hours$

The range of the function is the interval----------> $[-10,30]$

$-10\°\ F \leq y\leq 30\°\ F$

therefore

the answer is

The domain is all real numbers 0 through 30