What is the inverse of the function f(x) = x +3?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false