exam Maths Puzzle Numerical Ability

find the point of intersection for the lines below using the substitution
3x+2y=4
y=1-2x

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log9(x-7)+log9(x-7)=1 consider the function f(x)+x^2+4x+1.
a.) Find h, the x-coordinate of the vertex of this parabola.

b.)Substitute the two whole number values immediately to the left and right of