Abbie has a box with 9 black beads, 10 white beads and 11 blue beads. Abbie takes a bead from the box at random.

Find the probability that Abbie takes a black bead.

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?