Answer:
a exponent 2-b exponent 2
ab
Answer:
48 cubic units.
Step-by-step Explanation:

random cubic units
tower-stacked cubic units
x 
x 
Answer:
third choice
Step-by-step explanation:
That would be the third one. It has to be a closed circle because it includes the sign, ≤ meaning that it also has the number 5 included. The numbers that go to the left of 5 are smaller, too.
I'm not sure what you are asking if your looking for the hours it should take him to get there it's about 10 hours adding the 2 and 3 he already drove... 5 left to go.. hope that helps