Which expression would be easier to simplify if you used the commutative property to change the order of the numbers?
O A. (-19) + (-10)+ 7/8
O B. (-80) + 43+ (-120)
O C. 80+ 20+(-17)
O D. 2/3 + (-1/3) + 1/5

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?

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?