PLEASE HELP I'M STUCK ;-; Use the distributive property to expand the following expression:
-2(2.1x + 3y - 1.8)

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

In an equilateral triangle, each angle is represented by 5y+3. what is the value of y? a. 9.7 b. 10.8 c. 11.4 d. 7.2

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )