In the equation 2/3 x ½ x 5 = N, what is N?​

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

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Let x = a + bi and y = c + di and z = f + gi. which statements are true?