For a printing company, the cost of printing business cards is a linear function, c(x) = 0.05x + 20, where x is the number of cards printed. what is the cost of printing 1200 business cards?


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The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?