Salma, a college freshman, is deciding on classes for her first term. She can choose to take some or all of the six classes from the list below. She must take at least one of them. Astronomy Biology Chemistry Dance Economics Geography In how many ways can Salma choose the classes to take? (order of classes chosen doesn't matter)

What is the y-coordinate of the solution of the system of equations? [tex]y = 2x + 14 \\ - 4x - y = 4[/tex]y=

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude