book Maths Puzzle Numerical Ability

Find g for S = 140, t=2

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book Other Question

Please help me with this one.

Find the equation of the axis of symmetry, the coordinates of the vertex, and the coordinates of the x-intercepts, if they exist, for each parabola.

1. f(x)=2x^-3x-14

Thanks very much in advance Graph & Label the vertex or intercepts:

1) -3x^2+x+1

2) -(x-1)^4+1

3) What is the x intercept of (x+1)^3?