Was i right for 46 but 47 i need with

You are not right on #46. Since he is going 50 miles in 50 minutes, that means that he is going a mile a minute. That means in an hour, he will have gone 60 miles. That means he will have been going 60 mph, so the correct answer is (4)

I cannot help you with 47 because you did not include the picture it shows.

6.80 or 6.8 is the answer. They both mean the same thing so you can right down whichever