Hiii! please help i’ll give brainliest

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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) .

Suppose i flip two identical coins. what is the probability that i get one head and one tail?