Answer:

Step-by-step explanation:





The most accurate "estimation" for 5+4 is um... 9
6 3/4= 6.75
80 mph * 6.75 hours = 540 miles total
Final answer: 540 miles
The first step I would do would be to list the factors of 28.
28(1)
14(2)
7(4)
Now notice that 7 + 4 = 11
So that means that -7 + -4 = -11.
Therefore, -7(-4) = 28
Your two numbers are - 7 and - 4. Hope that helps!