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Question 73684This question is from textbook college algebra
: Please tell me if i did these right!!
) It is approximately 300 miles from Chicago, Illinois, to St. Louis, Missouri. Allowing for various traffic conditions, a driver can average approximately 60 miles per hour.
a) How far have you traveled after 3 hours?
Answer: 180
Show work in this space: 60*3= 180
b) How far have you traveled after 4 hours?
Answer: 240
Show work in this space: 60* 4= 240
c) How far have you traveled after t hours? i.e. write a linear function that expresses the distance traveled, d, as a function of time, t.
Answer: 60 miles left to go
Distance = rate * distance
D=r(t)
300-240=60
d) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled 3 hours?
Answer: 120 m
Show work in this space: 300 m-180=102m
e) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled 4 hours?
Answer: 60 m
This question is from textbook college algebra
Answer by bucky(2189)   (Show Source):
You can put this solution on YOUR website! Please tell me if i did these right!!
) It is approximately 300 miles from Chicago, Illinois, to St. Louis, Missouri. Allowing for various traffic conditions, a driver can average approximately 60 miles per hour.
a) How far have you traveled after 3 hours?
Answer: 180 <----OK but don't forget the units "miles"
Show work in this space: 60*3= 180 <----OK but don't forget the units "miles"
b) How far have you traveled after 4 hours?
Answer: 240 <----OK but don't forget the units "miles"
Show work in this space: 60* 4= 240 <----OK but don't forget the units "miles"
c) How far have you traveled after t hours? i.e. write a linear function that expresses the distance traveled, d, as a function of time, t.
Answer: 60 miles left to go <--- No. Just erase this line
Distance = rate * distance <--- rate * time not rate* distance
D=r(t) <---- this is the correct answer for problem c. You can eliminate the parentheses and just make it D = r*t
300-240=60 <--- erase this line. The answer to this problem is D= r*t
d) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled 3 hours?
Answer: 120 m <--- OK
Show work in this space: 300 m-180=102m <--- should be 120 not 102.
e) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled 4 hours?
Answer: 60 m <---- OK. The work is 300 - 60*4 = 300 - 240 = 60 miles
Good job. It looks as if you understand how to work these problems.
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