A student was interested in studying the relationship between burping and eating at BCs. The hypothesis was that more expensive meals would correlate with more burping. They watched BCs patrons for two weeks and recorded the cost of meals and how often people burped while eating. In this experiment, the independent variable was , and they should present the data as a . a. Burping frequency,
b. Bar graph with error bars
c. Burping frequency
d. Scatter plot with a trendline

Price of the meals

Scatter plot with a trendline

Step-by-step explanation:

None of the provided options are correct. The independent variable was Price of the meals, and they should present the data as a Scatter plot with a trendline. The Price of the meal is the independent variable because it does not depend on any other variable and is instead the cause of the burping frequency which would be the dependent variable in this scenario. The Scatter plot would allow you to mark each individual's burping frequency on the same prices for the meal, since you would most likely have more than one value of burping frequency for the same priced meal.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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