Clara is leaving her uncle's house to go to her house. after driving 2 hours at a steady rate, clara is 79 miles from her house and after driving 3 hours clara is 4.5 miles from her house. how far is clara from her uncle's ! you!

If you use your subtraction right  when you use deceleration as for example like 4.5 from 79 well you know it had to slow down so the correct Answer for this would end up as 17 .5 Try the easy way like 

79 dived by 4.5 would get you the same answer but don't divide backwards you will get an in correct answer 

hope i helped;)

She is 153.5 miles from her uncle's house because 79 + (74.5)= 153.5
                                                                      (2 hr.)  (1 hr.)   (3 h)