Determine the domain and range of the function f={(10,0),(26,-6),(44,0),(54,7)}

Ineed i do not understand i'm only 8

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?