SOLUTION: Helen traveled a distance of 20x+40 miles at 20 miles per hour on the yellowhead highway. find the binomial that represents the time that she traveled

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Question 103059: Helen traveled a distance of 20x+40 miles at 20 miles per hour on the yellowhead highway. find the binomial that represents the time that she traveled
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate x Time = Distance
1. R%2AT=D
D = 20x+40 miles
R = 20 mph
From 1,
1. R%2AT=D
cross%28R%29%2AT%2Fcross%28R%29=D%2FR Multiplicative inverse of R.
T=D%2FR
T=%2820x%2B40%29%2F20Substitute.
T=20x%2F20%2B40%2F20Distributive property.
T=x%2B2Simplify. Units are hours since miles%2F%28miles%2Fhr%29=hr