exam Maths Puzzle Numerical Ability

Using the given equations of parabolas, find the focus, the directrix and the equation of the axis of symmetry.

y=1/20 x^2

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exam Other Question
The length of a rectangle is 3 cm more than 5 times its width. If the area of the rectangle is 62 cm2, find the dimensions of the rectangle to the nearest thousandth.

show work please How do I solve:

1) 1/3f = 4 - 2/3f
2) 3q - 5/8 = 0

Thank you
Maria