For number 3, the answer will be B because I use the formula of y/x which is 60/1, 120/2, 180/3, 240/4, and 300/5 which is y=60x. For number 4, I know that it will travel 60 miles per hour, so I just need to take 450 divided for 60 to get how long does it took to travel for 450 miles which equal 7.5 hours or 7 1/2 hours which is A. For number 5, I know that 6 3/4 hour will also equal to 6.75 hours. Now, I just need to take 60 times 6.75 to see how many miles does it took to travel for 6.75 hours which equal 405 miles which is C. Hope it help!