It took margaret 2 hours and 14 minutes to clean her room including her closet right the time it took margaret to clean her room as a mixed number in simplest form and as a decimal

Mixed Number would be 134 Minutes because 2 hours is equivalent to 160 minutes and 160 minutes + 14 minutes is = 134 minutes.

As a decimal it would be 2.14 hours

And in simplest form It would be the same as 2 Hours and 14 Minutes.

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)