exam Maths Puzzle Numerical Ability

2.5% equals what decimal number, & fraction?

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exam Other Question

I need some help with a couple of Parabola problems with graphs. Here is the first one:

Find the vertex and intercepts for each parabola. Sketch the graph.

g(x) = x� + x - Determine which two equations represent parallel lines.
(a) y = 3/7 x + 4
(b) y = 7/3 x + 9
(c) y = 7/3 x - 9
(d) y = - 3/7 x + 9