A shoe repairman is working with his assistant, who takes 5 times long to repair of shoes. Together they can fix 20 pairs of shoes in an eight-hour day. How ling does it take the repairman to fix one pair of shoes by himself? A: 8/24 hour B: 2/3 hour C: 1 hour D: 4/25 hour The total cost of an item including sales tax is directly proportional to its price. If the cost of a 24$ item is 25.44$, what is the total cost of a 75$ item? A: 795 B: 76.44 C: 79.50 D: 106 Divide and state the quotient in simplest form. X^2-4-45/x+6 ÷ x^2-3x-40/x+6 A:9/8 B:x^2-4x-45/x^2-3x-40 C: x-9/x-8 D: x-8/x-9 Simplify: 7-(7/3x)/(5/x)-(5/3x^2) A: 35x B: 14x/5 C: 21x^2-7x/15x-5 D: 7x/5 can someone show me step by step?
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