Let's solve for y.
4x+7y=28
Add -4x to both sides.
4x+7y+−4x=28+−4x
7y=−4x+28
Divide both sides by 7.
7y/7=−4x+28/7
y=−4/7x+4
The answer for this problem is 125
We need to know the schedules . . . How often does each shuttle run ?
If x=6 and y=3 is 9_______________________________________