What is 1/2 minus 1/6

What is the pattern in the values as the exponents increase?

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost