Brandie lives on the twelfth floor of her apartment building. she walks down 2 flights to visit a friend, then up 3 flights to deliver a message to a neighbor. which integer best represents the number of flights brandie must walk to get back to her starting point?
a.–12
b.–1
c.5
d.7

Option B. -1

Step-by-step explanation:

Brandie lives on the twelfth floor of her apartment building.

She walks down 2 flights to visit a friend = 12 - 2 = 10th floor

Then up 3 flights to deliver a message to a neighbor = 10 + 3 = 13th floor

Now Brandie walk to get back to her starting point that is 12th floor, she must walks down 1 flight.

So the answer would be option 'B' -1

50

step-by-step explanation: