One of the following sets of ordered pairs represents a proportional relationship. Which equation represents that relationship?
1: (0, 3), (3, 6), (6, 9), (9, 12)
2: (0, 0), (2, 8), (4, 16), (5, 20)

Three coins are flipped. what is the probability that there will be at least two tails?

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11