How much do you need in your account at the beginning?

The graph shown is the graph of which function?

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?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10