Determine the true statements about trend lines in scatterplots. Check all that apply.
A. A trend line can be used to make predictions in real-world situations.
B. A scatterplot that shows no correlation between the variables does not have a trend line.
C. A line of best fit must contain at least two of the original points.
D. A regression line and trend line are equivalent terms.

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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answers

rauschg

rauschg · hand

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c

-by-step explanation:

it would be c

answer: b.36 feet

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