Which of the sets of ordered pairs represents a function?

A = { (1, - 2), (3, - 5), (5, 2), (7, 5) }

B = { (4, 2), (4, - 2), (9, 3), (9, - 3) }

only A

only B

Both A and B

neither A or B

5 times 3/4 as a fraction

Complete this activity. Toss a coin 200 times. Record the heads and tails as you toss. What were the number of heads after: 10 tosses? 50 tosses? 100 tosses? 200 tosses?

Steel is formed by combining masses of carbon and iron in the ratio 1:49. How many pounds of iron would it take to create 10 pounds of steel? A) 0.49 B) 0.48 C) 4.9 D) 9.8

The number of branches on a tree demonstrates the Fibonacci sequence. How many branches would there be on the next two levels of this tree?

A die is rolled. what's the probability that the the number is odd and less than 3

Write the equation of a line parallel to why equals 4x+5 and passes through (2,-3)

Use the pythagorean theorem to find A 23²=a²+17²

What is the excluded value of a/b-2

A woman is traveling with a wolf, a goose, and a mouse. She must cross a river in a boat that will only hold herself and one other animal. If left to themselves, the wolf will eat the goose and the goose will eat the mouse.

Does - 3 (x-4) = - 3x=12 have one solution, many solutions, or no solutions at all?