Please help dont need working out thanks​

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?