recall d = rt, distance = rate * time.
let's say airplane A is going at a rate of "r", therefore airplane B is moving faster, at a rate of "r + 80".
now, after 3 hours, both planes have been travelling for 3 hours each, and say if A has covered "d" miles, then B has covered the slack of 2490 - d.
(1, 2)
plug 1 in for x and 2 in for y
2x1=2 is 2=2
Answer:i wish i can help but good luck getting the answer :}
Step-by-step explanation: