3(10 - x) = 21 30 - 21 30 - 3x = 21 - 3x - 3x -9 = X =
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<h2>Time required to complete the round trip 
where x is average velocity on the outgoing trip.</h2>
Step-by-step explanation:
Let average velocity of outgoing trip = x mph
The average velocity on the return trip is 15 miles per hour slower than the average velocity on the outgoing trip.
Average velocity of return trip = (x-15) mph
Distance to vacation place = 420 miles
Distance to vacation place = Time for outgoing trip x average velocity of outgoing trip
Distance to vacation place = Time for return trip x average velocity of return trip
We have total time T = t₁ + t₂
That is
Time required to complete the round trip where x is average velocity on the outgoing trip.
Use the app Desmos it’s a graphing calculator! Or you can go to y= if you have a TI-84 plus calculator
Hello,
y-intercept is -6
If x=0 then y=-6