[IMAGE] question 6 please help ASAP

Is the square root of 4 plus the square root of 16 rational?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

I’m how many different ways can she give the four remaining flowers to the rest of the teachers in the afternoon