Joanna went school supply shopping. She spent $24.61 on notebooks and pencils. Notebooks cost $2.04 each and pencils cost $1.31 each. She bought a total of 16 notebooks and pencils. How many of each did she buy?

After two years, how much has been paid into interest?

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Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?