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What is the standard form of -5x^2+2x^4-11+x^3+3x

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?

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3