Answers created by Billy T

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• Help with this question, keep getting it wrong - (3x+4)² - (x+7)(x-6) ?
  
• If a sound is played with a frequency of 480 Hz, and a second sound is played with a frequency of 800 Hz, what is the name of the musical interval between the two sounds?
  
• At 10 am a ship is at location S, position vector (−6 i − 3 j) km, and is moving with velocity (2 i − 9 j) km/h. If the ship continues with this velocity what will be its position vector at 4 pm? position vector (km) =