Hannah is at an arcade where each game requires her to use 2 tokens. She buys 40 tokens to begin. Let n be the number of games Hannah has played. Find the number of games Hannah has played if she has 16 tokens left.

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Acircle has a circumference of 28.36 units what is the diameter of the circle

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.