Question 82743: Could you help me solve the rest ofthis and check to see if what I did do was right. It is not from a textbook. Thank you
3) 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 miles
Show work in this space: D = RT
60(3) = 180
b) How far have you traveled after 4 hours?
Answer: 280 miles
Show work in this space: D = RT 60(4) = 280
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:
d) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled 3 hours?
Answer: 120 miles
Show work in this space: 300 – 180 = 120
e) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled 4 hours?
Answer: 20 miles
Show work in this space: 300 – 280 = 20
f) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled t hours? i.e. write a linear function that expresses the distance to be traveled to reach St. Louis, s, as a function of time, t.
Answer:
Answer by vertciel(183)   (Show Source):
You can put this solution on YOUR website! Correct: 3a & 3d
3) 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.
b) How far have you traveled after 4 hours?
Answer: 280 miles
Show work in this space: D = RT 60(4) = 280 <-- Are you sure 60 x 4 = 280??
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:
- This question is asking you to write D = RT in terms of T. First, substitute any known variables into the equation. Then, isolate T and you have your answer; you can start by dividing both sides by T.
e) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled 4 hours?
Answer: 20 miles
Show work in this space: 300 – 280 = 20 <-- Your answer here will change after you find out whether 60 x 4 = 280.
f) How far will you HAVE LEFT to travel to reach St. Louis after you have traveled t hours? i.e. write a linear function that expresses the distance to be traveled to reach St. Louis, d*, as a function of time, t.
Answer: D = 300 - 60(T)
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