exam Maths Puzzle Numerical Ability

Find the Richter number of an earthquake if its intensity is 3 160 000 times as great as the reference intensity.

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exam Other Question

Use the ac test to determine if the following trinomial can be factored. If it can be factored, find the values of m and n.
3x^2+11x-4
Find all vertical asymptotes and graph:

f(x) = 3x + 1/x-4