Question

rory records the percentage of battery life remaining on his phone throughout a day. the battery life decreases as rory uses the phone, but will increase or stay at 100% while charging. the graph represents the percentage of battery life remaining after a certain number of hours. at which times could rorys phone have been plugged into the charger? select three options. 6 hours 9 hours 11 hours 14 hours 19 hours

Explanation:

Step1: Analyze battery - life graph

The battery life increases or stays at 100% while charging. We look for times when the battery percentage is rising or at 100%.

Step2: Check time - points

At 9 hours, the battery is rising from a low value. At 11 hours, the battery is at 100% and stays there for a while. At 19 hours, the battery is rising from a lower value.

Answer:

9 hours, 11 hours, 19 hours