Which of the following rational numbers is equal to 4.5 with a line over 5? 41/9, 41/9, 42/9, 43/9

41/9
42/9
40/9
43/9

If an athlete can bike 6 miles in 25 minutes, how many miles will he bike in an hour and half if he continues to bike at the same rate?

With this one. will mark brainliest

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.