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29. Express the following sum as a decimal to three significant figures: 7/8 + 9/10 = Answer: 30. Solve for the positive value of x that satisfies the following equation: (x + 20)(x - 5) = 350 Answer: 31. Solve for x: 14x + 10 = 38 - Answer: Name: CHE115: Math Practice Week 1: Virtual Asynchronous 32. Simplify the following expression: log10 (1042+2) = A) 40x3 + 20 B) 4x3 + 2 C) log (4x3 + 2) D) log (4x) + log (2) E) 8x3 - 33. Simplify the following expression: log10(105x2->) = A) 5x2.7 B) log (5x2 - 7) C) 50x2 - 70 D) log (5x) - log (7) E) 5x2/7 34. Simplify the following expression: eln(x*+2) A) e-xt+e 2 B) 10x + 20 C) x4 + 2 D) 6x E) x/2 35. Simplify the following expression: In(e(x*+2")) = A) e-x'+e:25 B) 10x4 + 20 C) 2x D) 8x E) x4 + 20 36. Simplify the following expression: 2. log (3) A) log (9) B) log (6) C) log (2/3) D) log (3/2) E) This equation cannot be simplified. 37. Simplify the following expression: 3. log (4) A) log (12) B) log (7) C) log (64) D) log (81) 38. Simplify the following expression: log (4) + log (2) A) 6 B) 8 C) log (6) D) log (8) E) 16 39. Solve for 'n' in the following equation: log (3) = n A) 10 B) 100 C) 1000 D) 0.477 E) 1.10 40. Solve for 'x' in the following equation: log (x) = 3 A) 10 B) 100 C) 1000 D) 0.477 E) 1.10