How do I solve functions like this. It would be great if you could give a general break down. I didn't quite get it when my teacher was working through problems like this.​

There is diarrhea on the floor. what do i do? my mum gonna see that i diarrhea on the floor! * don't report, i'm serious! *

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

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.