Round 258,177 to the nearest hundreds thousand

Me because some of question i don’t understand

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x