Answer:
D) -1/7
Step-by-step explanation: If you go down 1 and go right 7 it will give you the slope of -1/7
Vicki: 10 + 10 + 20 = 40
Johnny: 10 + 10 + 30 = 50
50 - 40 = 10 birds
C
Step-by-step explanation:
it's the only one that hasn't been with a positive 2