Least to greatest 0.7, 62%, 4/5, 2.3 8%, 3/4, 0.6

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?

We just started the introduction into circles and i have no idea how to do this.

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.