A box consists of 6 red cards, 5 yellow cards and 4 white cards. Two cards are drawn at random from the box. Find the probability that both cards are of the same colours?

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?