Question

on saturday mornings, stefan volunteers at the hospital where his mother works. one saturday, he answers phone calls at the information desk while the receptionist is away. then he spends 40 minutes delivering flowers to patients rooms. in all, stefan volunteers at the hospital for 90 minutes that day. which equation can you use to find the amount of time t that stefan answers phone calls? t + 40 = 90, t/40 = 90, 40t = 90, t - 40 = 90. solve this equation for t to find the amount of time that stefan answers phone calls. minutes

Explanation:

Step1: Identify the equation

The total time Stefan volunteers is 90 minutes, which is the sum of the time he answers phone calls (\(t\)) and the time he delivers flowers (40 minutes). So the equation is \(t + 40 = 90\).

Step2: Solve for \(t\)

To solve \(t + 40 = 90\), subtract 40 from both sides:
\(t + 40 - 40 = 90 - 40\)
\(t = 50\)

Answer:

The equation is \(t + 40 = 90\), and \(t = 50\) minutes.