exam Maths Puzzle Numerical Ability

1) write log7 49=2 in exponential form.

2) use the change of base formula( property 10.9) to solve for x; x=log3 90

3) solve for x: 9/(4x)+1/3=5/(2x); (x^-1=4/3)

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exam Other Question

express as a rational expression:

x^3+y^3+z^3-3xyz/a^3+b^3+c^3-3abc times

a^2+b^2+c^2-ab-bc-ca/x^2+y^2+y^2-xy-yz-zx
Write an equation for the line in point/slope form and slope/intercept form that passes through (1,4) and parallel to the line 2x-3y=6.