A town's yearly snowfall in inches over a 10-year period is recorded in this table. What is the mean of the snowfall amounts?

15.0 in.

17.0 in.

17.9 in.

18.9 in

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?