The length of a living room is 12 feet and its width is 10 1/2 feet. the length of the room is being expanded by x feet. choose an expression to represent the new area of the living room in square feet and the expanded form of the expression. select all that apply.

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?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary