JV Academic Team Math Questions

Z varies inversely to Y. If Y equals 1/3 when Z equals 12, then, if Y equals 8, what does Z equal? Multiply the quantity (9x-13) times the quantity (5x+12). Simplify the following algebraic expression: 9x2 – 42x + 49. Determine the value of the following algebraic expression when x equals … ................
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