2x + 5 = 11, x = 3, 5k + 3 = 23, k = 4, 3(x + 5) + 2(2x + 3) = 0, x = -3, y = mx + c, make m the subject, A = 2πrh, make r the subject, √2, irrational number, 3/4, rational number, x > 2, open circle at 2, shade to the right, x ≤ 4, closed circle at 4, shade to the left, -2x < 6, x > -3

Chapter 2. Algebra. Practice 2

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