Answer:
They seem correct!
Step-by-step explanation:
Answer choice D, A,B, and C both equal 3.
In order to answer this question let's suppose,
Joe is x miles from the beginning and y miles from the end. These assumptions are necessary to answer further:
Now,
x=2y
x+y=30
plugging in x=2y in the above equation
2y+y=30
3y=30
y=10
Hence, according to our calculations, Joe has to hike 10 miles further
I believe that -3 is less than 3x-6 because if you look at their graph -3’s graph is below 3x-6 graph