A bag contains 3 red marbles and 5 blue marbles. Find the probability of drawing a blue marble,
keeping it, and drawing another blue marble. Write
the probability as a fraction in simplest form.

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet