Maria and Fabian are purchasing school supplies. Maria purchased a notebook for $5 and two packs of pencils for $2 each. Fabian purchased three folders for $1 each and a pack of markers for $3. Who spent more money? Show your work.

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?

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?