exam Maths Puzzle Numerical Ability

A student earns $0.65 for each mistake she finds in a text. Sketch the equation of direct variation.

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exam Other Question

I am stuck on this problem
Add: Express your answer in simplist form.
x^2/x+4+8x+16/x+4

Thank you
1. A car mechanic needs to mix together two solutions of anti-freeze. One solution is 100% pure anti-freeze and the other solution is 30% anti-freeze. The mechanic would like t