Answers edited by mimi

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• How do you find the equation of the line tangent to the graph of # f(x)=1/2x + 4#, (2,5)?
  
• What is the area of a circle with a diameter of 15m?
  
• Question #936dc
  
• How do you find the axis of symmetry and vertex point of the function: #y=x^2+6x-2#?
  
• What is the secant of 30 degrees?
  
• How do you find the inverse of # f(x)= x^2-7#?
  
• How do you find the value of #tan 150#?