If the unknown variable is represented by the letter 𝑥, formulate equations for
the following word problems:
4.1 A number multiplied by 20 and increased by 25 equals 64. (3)
4.2 Third of a number decreased by 22 equals 52. (3)
4.3 The sum of a square root of a number and 10. (2)
4.4 The cube root of the number multiplied by 5. (2)
4.1 20𝑥 + 25 = 64
4.2 (1/3)𝑥 - 22 = 52
4.3 √𝑥 + 10
4.4 5∛𝑥