Fred has 10 coins in a book bag. he has 4 quarters, 1 penny, and 5 dimes. if fred reaches into his book bag and draws a coin without looking, what is the probability that he will draw a quarter?

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?

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Which function has the domain x> -11