Choose the algebraic description that maps AABC onto AA'B'C'in the given figure. A) (x, y) —> (x + 8. y + 4)
B) (x, y)—> (x + - 8. y - 4)
C) (x, y)—> (x + 4. y + 8)
D) (x, y) —>(x-4,y-8)

Solve the system of equations. y= 2x y= x^2 - 15

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?

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.