A car dealer sends an email survey to all customers who bought two-door cars. The previous month, 150 people bought two-door
cars. Surveys were sent to 95 of these people, chosen at random, and 80 people responded to the survey. Identify the population and
the sample.
A. The population is 150. The sample is 95.
B. The population is 95. The sample is 80.
C. The population is 80. The sample is 150.
D. The population is 150. The sample is 80.
E. The population is 95. The sample is 150.

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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according to egenuity the answer is

step-by-step explanation:

d. 344.22