Let be the event that a new car requires engine work under warranty and let be the event that the car requires transmission work under warranty. Suppose that , , and . (a) Find the probability that the car needs work on either the engine, the transmission, or both.

(b) Find the probability that the car needs no work on the engine.

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) .

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false