Solve for [x]. The pair of polygons are similar. The scale factor from A to B is 9 : 10 pls help

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

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