Charlotte is going to run a 10-kilometer race. she has trained to run 1 kilometer every 4 minutes. after she runs at this rate for 20 minutes, which statement is true?

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

How do you determine if an ordered pair is a solution to a given equation?

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?