SOLUTION: CAN YOU PLEASE HELP ME WITH THIS PROBLEM Chrystal drove 30 miles at x mph before 6:00 a.m. After 6:00 a.m.,she increased her speed by 9 mph and drove 10 additional miles. Use

Question 307428: CAN YOU PLEASE HELP ME WITH THIS PROBLEM
Chrystal drove 30 miles at x mph before 6:00 a.m. After 6:00 a.m.,she increased her speed by 9 mph and drove 10 additional miles. Use the fact that D=RT to write an expression for her total traveling time.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
d = rt
t = d/r
t = (30/x) + 10/(x+9)
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or

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