exam Maths Puzzle Numerical Ability

f(x)=7
what is f(2)?

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exam Other Question

i factored this quadratic expression completely, and came up with the answer and roots of the expression. My answer is 6(x^2 + 5), root of 20. The problem is 6x2 - 42x + 72. Please tell me this is correct? Find an equation of the line that has the same y-intercept as the line x - 3y = 6 and contains the point (5,-1).