Which is the definition of a ray?

a. a part of a line that has one endpoint and extends indefinitely in one direction
b. the set of all points in a plane that are a given distance away from a given point
c. lines that lie in the same plane and do not intersect
d. a part of a line that has two endpoints

What percent of 18 is 24? and plz explain thx.

Hey hotel charges guests $19.75 a day to rent five video games at this rate which expression can be used to determine the charge for renting nine video games for one day at this hotel? pls

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.