exam Maths Puzzle Numerical Ability

The sales tax is $49 for a dining room table that costs $1225. Find the sales tax rate?

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exam Other Question

Solve.

w^4 - 4w^2 - 2 = 0

What is the solution? w = _____
Given the standard form for a conic section.

{{{{ax^2+by^2+cxy+dx+ey+f=0 and the values a=-5 b=0 c=0 d=16 e= -4 f= -12}}}}
Rewrite the equation in standard quadratic form.