The table shows the changes in depth of a lake each yeah for three years. How many inches must the depth increase in the fourth year for the depth to increase 3/4 inch over the four year?

Mercury poisoning is dangerous overload of mercury within the body. a major source of mercury within the body, a major source of mercury poisoning is consuming fish that contain mercury. certain fish are more prone to having higher levels of mercury than others. the pie chart shows the distribution of four breeds of fish at a hatchery. the hatchery has approximately 6,000 fish. a biologist from the centers for disease control and prevention randomly test 5% of each breed of fish for mercury content. her findings are shown in the following table. based on the biologist's findings, if a single salmon is randomly selected from those that were tested, what is the probability that this particular fish would have a dangerous mercury level? a) 0.001 b) 0.004 c) 0.02 d) 0.08

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?