Write a system of linear equations in three variables, and then use matrices to solve the system.There were approximately 100,000 vehicles sold at a particular dealership last year. The dealer tracks sales by age group for marketing purposes. The percentage of 36- to 59-year-old buyers and the percentage of buyers 60 and older combined exceeds the percentage of buyers 35 and younger by 34%. If the percentage of buyers in the oldest group is doubled, it is 25% less than the percentage of users in the middle group. Find the percentage of buyers in each of the three age groups.
A. 33% 35 and younger; 53% 36-59 year olds; 14% 60 and older
B. 27% 35 and younger; 55% 36-59 year olds; 18% 60 and older
C. 14% 35 and younger; 53% 36-59 year olds; 33% 60 and older
D. 35% 35 and younger; 50% 36-59 year olds; 15% 60 and older
Answer: A
Mathematics
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Write out all the terms of the series.
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Match the equation to the graph.
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Determine the x- and y-intercepts on the graph of the equation.y = x + 7
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Mathematics