Question

I forgot how to do this graph thing with algebra so If you could please explain it to me that would be great :)

Answer 1

Answer: D

Step-by-step explanation: It said the grandparents were less than 89 years old, if it said that the grandparents that were 89 and younger had remembered that's when you would use a solid circle because the 89 would be included. But since 89 isn't included then it's an open circle.