Solve the equation.x2 - x = 72

A. {1, 72}
B. {8, 9}
C. {-8, -9}
D. {-8, 9}


Answer: D

Mathematics

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Find the derivative.f(x) = (3x - 5) + 12x

A. f'(x) = 3x1/2 - 5x-1/2 + 12x B. f'(x) = 4.5x3/2 - 2.5x1/2 + 12 C. f'(x) = 4.5x1/2 - 5x-1/2 + 12 D. f'(x) = 4.5x1/2 - 2.5x-1/2 + 12

Mathematics

Answer the question.A restaurant has the following statement on the menu: "All dinners are served with a choice of: Soup or Salad, and Potatoes or Pasta, and Corn or Beans." A customer asks for salad, potatoes, and pasta. Is this order permissible?

A. No B. Yes

Mathematics

Solve the application and answer with a complete sentence.Robert receives a commission of $280 on sales of $3500. What is his commission rate?

A. Robert's commission is 9%. B. Robert's commission is 16%. C. Robert's commission is 8%. D. Robert's commission is 7%.

Mathematics

Simplify. ? 

A. 48 B. 2304 C. 96 D. 14

Mathematics