Which of the following relations is a function? a. { (1, 2), (1, 3), (1, 4), (1, 5) } b. { (1, 3), (2, 3), (4, 3), (9, 3) } c. { (5, 4), (-6, 5), (4, 5), (4, 0) } d. { (6, -1), (1, 4), (2, 3), (6, 1) }

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?