Simplify. -11x-6x

i did the 4 times and got it wrong and i only have 1 more chance so please do it

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

I’m really confused and need your assist me with this question i’ve never been taught