When solving a system of equations, jared found y = x + 10 for one equation and substituted x + 10 for y in the other equation. nicole found x = y – 10 for the same equation and substituted y – 10 for x in the other equation. who is correct? explain.

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?