Ms. alonzo ordered 4,000 markers for her store. only one tenth of them arrived . how many markers did she receive

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) .

Use the distributive law to multiply. 3(4x + 5y + 6)

Icould really use some with this question.