Please help with math and show work ill give you a brainliest 50 POINTS

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) .

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?