exam Maths Puzzle Numerical Ability

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Solve the systems by graphing.
McGraw Hill 6th edtion. 8.1 # 10

2x-y=4
2x-y=6

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exam Other Question

54) Business and finance. If the inventor in Exercise 53 charges $4 per unit, then her profit for producing and selling x units is given by the function:
P(x) = 2.25x - 7000
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