Which of the sets of ordered pairs represents a function?

A = { (3, - 5), (4, 6), (-3, 9), (2, 7) }

B = { (2, 4), (-1, - 7), (5, 6), (4,3) }

Only A

Only B

Both A and B

Neither A nor B

Y = 2x + 3 y = 3x - 1

What can be the last digit of the fourth power of a natural number?

Jamie is the accountant of a logistics company. In the month of December, $5,000 of wages remained unpaid. The accounting period of the company ends in the month of December. What will be the adjusting entry passed by Jamie?

Original:1,982,784 New:176,000,789

Jeffery surveyed 50 randomly selected workers at a factory. He collected data about the individual output of a worker on an average day. The results are shown using the box-and-whisker plot. What percent of workers have output more than 70 units?

Farmers marked 45 cows and released them. The next day they counted 150 cows and 15 had marks. Find the best estimate for the cow population.

Find the value of Q in the following system so that the system to the solution is { (x, y) : x-3y=4} x-3y=4 2x-6y=Q

Five people can mow a lawn in 12 hours. How many more people are needed to mow the lawn in just 3 hours, assuming each person mows at the same rate?

The musical started at 1:10pm. It ended at 3:40pm. How long was the musical

eleven of the 25 people on the bus get off at the first stop. What percent best represents the portion of the bus that got off in the first stop