Question

the temperature has been gradually increasing since 6:00 am in a small town near the equator. the table shows the temperature increasing by the hour. what is the domain and range of the function? (zero represents the time at 6:00 am)
time since 6:00am (hours) | temperature (°f)
0 | 72
1 | 78
2 | 81
3 | 82
options:
domain: ( 0 leq x leq 3 ), range: ( 72 leq y leq 82 )
domain: ( {72, 78, 81, 82} ), range: ( {0, 1, 2, 3} )
domain: ( 72 leq x leq 82 ), range: ( 0 leq y leq 3 )
domain: ( {0, 1, 2, 3} ), range: ( {72, 78, 81, 82} )

Explanation:

Step1: Identify domain (input values)

The input is time since 6:00am, so domain = $\{0,1,2,3\}$

Step2: Identify range (output values)

The output is temperature, so range = $\{72,78,81,82\}$

Answer:

Domain: {0,1,2,3}
Range: {72,78,81,82}