If the relationships below are given in the form (input, output), which pairing always describes a function?
(number of doors in a car, number of cup holders in the car)
(height of a building in feet, height of the building in inches)
(beverage charge on a bill, total meal charge on the bill)
(distance from home during a trip, time elapsed during the trip)

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Segment ab is shown on the graph. which shows how to find the x-coordinate of the point that will divide ab into a 2: 3 ratio using the formula

It says factor each expression completely 8y+48