Joey is asked to find the mean of this set of data: 4, 6, 7, 7, 7, 8, 12, 13, 15, 15, 17. What is the mode?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.