If x is the time, in hours, then:
x(55)=x(50)+15
5x=15
x=3 hours before Aisha is ahead of Luke
hope this helps you!
Answer:
6x - 18
Step-by-step explanation:
5x + 3y + x- 3y +(-3) + (-15)
Probably the last option. Because it has the points shown on the coordinate graph.