What is the solution of 1. 4y=x+4 x=y+2 2. 2x-y=4 4x-2y=4 Solve using the substitute method 3. 7x+8y=-25 x=-1-2y 4. 9x-3y=6 3x-2=y...

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Solve (x^2-9) ≤0 and write interval notation for the solution set. Show careful algebraic work/explanation. x

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Solve the following equation. 60x - 1200= -25x + 4750. The solution set is ?

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1. x < 1 and x > -3 2. x < 4 or x > 6