A teacher gave a benchmark test to see how well her students were prepared for an
approaching final. In the past, the students' benchmark scores had been a good
predictor of student performance on the final. The average score on the benchmark
was 22 correct answers out of 30 total questions. On average, how many questions
can the students be predicted to answer correctly on a final exam that has 75
questions?
A45 questions
B50 questions
C55 questions
DThere is insufficient data to predict make a prediction.

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d

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step-by-step explanation:

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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