How have these advances in-home technology changed the role of technicians in our society?

From the industrial age to modern day, technology has improved working conditions. Its impact on the work environment has streamlined tedious and environmentally wasteful processes, expedited access to work while exponentially increasing productivity and made working from anywhere easier than ever.

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt