What are the answers to these questions
and pls i need them NOW pls

3/4 ÷ 2 1/4
11/12 ÷ 1/5
2/5 ÷ 2
3 5/8 x 1 5/6
18/20 - 2/6
1 6/9 ÷ 1/3
pls help i am sooo dumb

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?

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

Simplify this expression. 8x 16(x + y)