The table below shows the cost of downloading songs from a website. Number of Songs Total Cost
At this rate, what is the cost per song?

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

What is the range of the data below? .8090100

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?