Kyle wants to know the average age of people living in a state when they first get their driver permit's which group will give Kyle the most random sample

If myesha works overtime, she gets paid "time and a half" for every hour she works. in other words, for every hour over 40 hours myesha works each week, she gets her hourly pay plus half her hourly pay. what is myesha's pay per hour when she works overtime?

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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